CN109951602B - Vibration control method and mobile terminal - Google Patents

Abstract

Embodiments of the present invention provide a vibration control method and a mobile terminal. The method includes: collecting a source voice signal; determining a negative gain that needs to be compensated for the source voice signal according to a preset vibration model; according to the negative gain Compensate the source voice signal to obtain a target voice signal; control the vibration of the sounding device according to the target voice signal. In this embodiment of the present invention, after compensating the source voice signal according to the negative gain, a target voice signal whose partial signal is weaker than the source voice signal can be obtained. Therefore, when the vibration of the sounding device is controlled by the target voice signal, the vibration of the sounding device will be correspondingly Attenuated to reduce user discomfort caused by excessive screen vibration.

Description

A vibration control method and mobile terminal

technical field

The present invention relates to the field of mobile communications, in particular to a vibration control method and a mobile terminal.

Background technique

With the development of mobile terminals, full-screen mobile terminals using screen sound technology have been popularized. Screen sound is the application of "piezoelectric driver technology" to mobile terminals, so that the function of the receiver is integrated with the screen, and there is no need to set the receiver on the front of the mobile terminal to sound. hole.

In the prior art, the voice signal is usually converted into an electrical signal of a certain frequency and amplitude and input to the vibration unit drive device, the vibration unit can vibrate under the drive of the vibration drive unit, and the mobile terminal screen vibrates with the vibration of the vibration unit, This in turn pushes the air to produce sound.

However, the above-mentioned technical solutions have the following disadvantages: because the screen vibrates and sounds, when the user uses the mobile terminal to conduct calls and other operations, the vibration is often too strong, causing discomfort to the user's face and ears close to the screen.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a vibration control method and a mobile terminal, so as to solve the problem that the screen vibrates too strongly when the sound generating device vibrates and emits sound.

In order to solve the above technical problems, the present invention provides a vibration control method, which is applied to a mobile terminal, and the method includes:

Collect the source voice signal;

According to the preset vibration model, determine the negative gain that needs to be compensated for the source voice signal;

Compensate the source speech signal according to the negative gain to obtain a target speech signal;

According to the target voice signal, the sound generating device is controlled to vibrate.

The embodiment of the present invention also provides a mobile terminal, including:

The acquisition module is used to acquire the source voice signal;

a negative gain determination module, configured to determine a negative gain that needs to be compensated for the source voice signal according to a preset vibration model;

a target speech signal obtaining module, for compensating the source speech signal according to the negative gain to obtain the target speech signal;

The control module is used for controlling the sounding device to vibrate according to the target voice signal.

An embodiment of the present invention further provides a mobile terminal, including a processor, a memory, and a computer program stored on the memory and running on the processor, and the computer program is implemented when executed by the processor The steps of the aforementioned vibration control method.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the foregoing vibration control method are implemented.

In this embodiment of the present invention, the source voice signal may be collected, and according to a preset vibration model, a negative gain that needs to be compensated for the source voice signal may be determined. After compensating the source voice signal according to the negative gain, some weak signals may be obtained. Therefore, when the vibration of the sounding device is controlled by the target voice signal, the vibration of the sounding device will be weakened accordingly, thereby reducing the discomfort caused by excessive screen vibration.

Description of drawings

1 is a flow chart of the steps of a vibration control method according to an embodiment of the present invention;

2 is a flow chart of the specific steps of a vibration control method according to an embodiment of the present invention;

3 is a schematic diagram of a frequency domain compensation according to an embodiment of the present invention;

4 is a schematic diagram of another time domain compensation according to an embodiment of the present invention;

5 is a structural block diagram of a mobile terminal according to an embodiment of the present invention;

6 is a specific structural block diagram of a mobile terminal according to an embodiment of the present invention;

FIG. 7 is a structural block diagram of another mobile terminal according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIG. 1 , a flowchart of steps of a vibration control method in an embodiment of the present invention is shown. The method is applied to a mobile terminal, and the specific steps include:

Step 101: The mobile terminal collects the source voice signal.

The embodiments of the present invention can be applied to mobile terminals, and mobile terminals include but are not limited to mobile phones, tablet computers, notebook computers, handheld computers, vehicle-mounted terminals, wearable devices, and pedometers.

In a specific application, the source voice signal may be collected by a voice collection device, which may be a microphone, etc. The microphone may be a silicon microphone or other types of microphones. The embodiment of the present invention does not specifically limit the voice collection device.

Illustratively, in a specific application scenario of the embodiment of the present invention, a user of a mobile terminal uses a mobile terminal to communicate with other users, and after the voice of the other user is transmitted to the mobile terminal, the mobile terminal controls the screen according to the voice signal of the other user. sound, the other user's voice can be used as the source voice signal. It can be understood that a person skilled in the art can collect the source voice signal according to an actual application scenario, which is not specifically limited in this embodiment of the present invention.

Step 102: The mobile terminal determines, according to a preset vibration model, a negative gain that needs to be compensated for the source voice signal.

In the embodiment of the present invention, the preset vibration model may be set with a corresponding relationship between the voice signal and the vibration sense value, and according to the preset vibration model, the vibration sense value corresponding to the source voice signal can be obtained. When the vibration sense value corresponding to the signal is greater than the preset vibration sense value, the user will feel uncomfortable. Therefore, the source voice signal with the vibration sense value greater than the preset vibration sense value can be determined as the source voice signal to be compensated, and according to the source voice signal. The vibration sense value corresponding to the source voice signal to be compensated is greater than the specific value of the preset vibration sense value, and the negative gain that needs to be compensated for the source voice signal is determined. In specific applications, the negative gain may correspond to a negative voltage amplitude.

It can be understood that those skilled in the art can determine the negative gain that needs to be compensated for the source speech signal according to the preset vibration model adapted to the actual application scenario, which is not specifically limited in this embodiment of the present invention.

Step 103: The mobile terminal compensates the source voice signal according to the negative gain to obtain a target voice signal.

In the embodiment of the present invention, after the negative gain is determined, the source voice signal can be compensated in the time domain to obtain the target voice signal, and the source voice signal can also be compensated in the frequency domain to further obtain the target voice signal. The embodiments of the present invention do not specifically limit the specific manner of compensating the source speech signal according to the negative gain.

Step 104: The mobile terminal controls the sounding device to vibrate according to the target voice signal.

In the embodiment of the present invention, the sound generating device may be a screen, a cover plate, etc. In practical applications, a sound can be generated by generating vibration of the device.

As an example, the process of controlling the screen sounding in the mobile terminal is used as an example to illustrate the specific implementation of controlling the vibration of the sounding device according to the target voice signal: the mobile terminal may be provided with a vibration unit, the vibration unit may vibrate according to the target voice signal, and the vibration unit It can be attached to the screen, and the screen can vibrate and sound with the vibration of the vibration unit; the vibration unit can also be at a certain distance from the screen. When the vibration unit vibrates, an air flow will be generated, which can push the screen to vibrate and sound.

In a specific application, if the sound-emitting device is a cover plate made of a weak-strength material such as a plastic battery cover, a plate battery cover, etc., it is better to keep a certain distance between the vibration unit and the cover plate, and the vibration unit will generate vibration when the vibration unit vibrates. The air flow pushes the cover plate to vibrate and sound, so as to avoid damage to the cover plate when the vibration unit vibrates when the vibration unit is too close to the cover plate.

It can be understood that in practical applications, when a user speaks, he usually speaks a continuous sentence, so a continuous dynamic source voice signal will be collected within a certain period of time. Part of the source voice signal is compensated to obtain the target voice signal. When the vibration of the sounding device is controlled according to the target voice signal, combined with the weighting settings of each voice signal, the dynamic negative gain compensation will not cause the lack of low-frequency voice signals, and will not Affects the user's calls, etc.

To sum up, in this embodiment of the present invention, a source voice signal may be collected, and a negative gain that needs to be compensated for the source voice signal may be determined according to a preset vibration model. After compensating the source voice signal according to the negative gain, A target voice signal whose partial signal is weaker than the source voice signal can be obtained. Therefore, when the vibration of the sounding device is controlled by the target voice signal, the vibration of the sounding device will be weakened accordingly, thereby reducing the discomfort caused by excessive screen vibration.

Referring to FIG. 2 , a flowchart of specific steps of a vibration control method in an embodiment of the present invention is shown. Specific steps include:

Step 201: For each different preset input voltage, the mobile terminal collects the vibration sense values of the sound-emitting device corresponding to different input powers to obtain the vibration model.

In the embodiment of the present invention, the vibration model can be obtained by training through step 201, and the corresponding relationship between each voltage, frequency and vibration inductance value can be obtained.

As an example, take the screen sound as an example to illustrate the basic principle of the screen sound: the PCM (Pulse Code Modulation) stream of the decoded original voice signal is obtained through the MODEM (modem), and then processed by the CPU (Central Processing Unit). The voice signal is processed by an independent voice DSP (Digital Signal Processing) or an independent voice DSP (Digital Signal Processing), and the voice signal is subjected to noise reduction, echo cancellation, frequency response correction, gain compensation, etc. The feedback unit) performs protocol conversion, and finally transmits it to the power amplifier PA to drive the vibration unit, and the vibration unit pushes the screen to sound.

Based on this principle, in specific applications, training the vibration model can be achieved in the following ways:

The DSP generates the equal amplitude logarithmic frequency sweep signal (specified frequency) of the preset input voltage and transmits it to the PA to drive the vibration unit to vibrate; the CPU controls and retrieves the vibration sense value collected by the acceleration sensor through IIC (Inter-Integrated Circuit, integrated circuit bus). , the acceleration sensor can be attached to the screen and is in the projection area of the vibration unit, so that the acceleration sensor can accurately measure the vibration value of the screen. In specific applications, because the screen usually vibrates in the direction perpendicular to the acceleration sensor, it can Obtain the Z-axis data of the accelerometer as the vibration value.

According to the frequency and the recovered vibration inductance value under the above preset input voltage, the frequency-vibration inductance value curve under the preset input voltage can be obtained; then change the specific value of the preset input voltage and repeat the above frequency-vibration inductance value Through the operation of acquiring the value curve, a vibration model including the corresponding relationship between voltage-frequency-vibration inductance value can be obtained.

In the embodiment of the present invention, considering that in the voice signal processing, the voice signal can be converted into a frequency domain signal corresponding to the voltage amplitude and frequency, therefore, after training the vibration model including the voltage-frequency-vibration inductance value corresponding relationship, The vibration sense value of the collected voice signal can be predicted through the vibration model, and the voice signal can be processed according to the predicted vibration sense value, so that when the vibration of the sound-emitting device is controlled by the processed voice signal, the vibration sense value can be at a suitable value. within the range.

Step 202: The mobile terminal collects the source voice signal.

Step 203: The mobile terminal performs down-sampling processing on the source voice signal to obtain a down-sampled voice signal.

In the embodiment of the present invention, the source speech signal is processed by down-sampling. Downsampling is the process of reducing the sampling rate of a specific signal. It is usually used to reduce the data transmission rate or data size. The downsampling factor (commonly represented by the symbol M) is generally an integer or rational number greater than 1. The downsampling factor expresses the sampling period change. become several times as large, or equivalently, the sampling rate becomes a fraction of the original.

In specific applications, since the low-frequency signal has a large vibration amplitude and strong vibration, and the vibration perception changes significantly with frequency, first down-sampling the source voice signal, for example, down-sampling the original 8k, 16k or 32kHz voice signal When the down-sampling voice signal reaches 2kHz, the effective bandwidth of the signal at this time is 1kHz, which can meet the vibration evaluation within 50-1kHz.

In the embodiment of the present invention, since the source speech signal is down-sampled, the computation amount can be greatly reduced, the MIPS (Million Instructions Per Second, the average execution speed of single-word fixed-point instructions) in the later calculation can be reduced, and the precision of the amplitude-frequency curve can be improved at the same time.

Step 204: The mobile terminal converts the down-sampled voice signal from the time domain to the frequency domain, and obtains an amplitude-frequency curve of the down-sampled voice signal; wherein, the amplitude-frequency curve corresponds to the voltage amplitude information of the down-sampled voice signal and frequency information.

In the embodiment of the present invention, the down-sampled speech signal can be converted from the time domain to the frequency domain through Fourier transform, and an amplitude-frequency curve corresponding to the voltage amplitude information and frequency information of the down-sampled speech signal can be obtained.

Step 205: The mobile terminal matches the vibration sensing information of the down-sampled voice signal in the vibration model according to the voltage amplitude information and frequency information of the down-sampled voice signal.

In the embodiment of the present invention, because the vibration sensing model includes the corresponding relationship between voltage, frequency and vibration sensing value, therefore, according to the voltage amplitude information and frequency information of the down-sampled voice signal, the corresponding vibration sensing information can be matched in the vibration model .

Step 206 : The mobile terminal determines, among the vibration perception information of the down-sampled voice signal, vibration perception value information that exceeds a preset vibration perception threshold.

In this embodiment of the present invention, the specific value of the preset vibration sensing threshold may be adaptively set according to an actual application scenario, and the preset vibration sensing threshold is not specifically limited in this embodiment of the present invention. After the vibration sensing information corresponding to the source voice signal is matched in the vibration model, the vibration sensing information corresponding to the down-sampled voice signal may be compared with the preset vibration sensing threshold to determine the vibration sensing information exceeding the preset vibration sensing threshold.

Step 207: The mobile terminal determines the frequency domain compensation negative gain corresponding to the vibration perception value information exceeding the preset vibration perception threshold.

In a specific application, the vibration information exceeding the preset vibration threshold may be subtracted from the preset vibration threshold to obtain the frequency domain compensation negative gain corresponding to the vibration information exceeding the preset vibration threshold.

It can be understood that the vibration model in steps 203 to 207 is obtained by training the down-sampled voice signal, and according to the matching of the down-sampled voice signal and the vibration model, the frequency domain compensation negative gain that needs to be compensated for the source voice signal can be determined.

Step 208: The mobile terminal compensates the source voice signal according to the negative gain to obtain a target voice signal.

As a preferred implementation of the embodiment of the present invention, the mobile terminal compensates the source voice signal according to the negative gain to obtain a target voice signal, including:

Sub-step A1: The mobile terminal converts the source speech signal from the time domain to the frequency domain.

Sub-step A2: The mobile terminal compensates the source speech signal in the frequency domain according to the frequency domain compensation negative gain to obtain a frequency domain compensated speech signal.

Sub-step A3: The mobile terminal converts the frequency domain compensated speech signal from the frequency domain to the time domain to obtain the target speech signal.

In the embodiment of the present invention, through sub-step A1 and sub-step A3, the source voice signal can be compensated in the frequency domain, and the source voice signal can be compensated in the frequency domain, the vibration sense of each frequency can be finely adjusted, and accurate compensation can be performed.

As an example, as shown in Figure 3, it shows the compensation method in the frequency domain. According to the input, the original PCM stream can be collected, the original PCM stream can be used as the source voice signal, and the vibration model can be trained according to the down-sampled voice signal, After the down-sampled speech signal is subjected to the Fourier transform FFT, according to the corresponding relationship between the frequency-voltage-vibration sense value in the vibration model, the frequency domain compensation negative gain is obtained. The speech signal is compensated in the frequency domain to obtain the compensated speech signal in the frequency domain, and the compensated speech signal in the frequency domain is converted from the frequency domain to the time domain through the inverse Fourier transform to obtain the target speech signal.

As another preferred implementation of the embodiment of the present invention, the mobile terminal compensates the source voice signal according to the negative gain to obtain a target voice signal, including:

Sub-step B1 (not shown in the figure): The mobile terminal determines the time-domain filter coefficient according to the frequency-domain compensation negative gain and the preset corresponding relationship between the negative gain and the filter coefficient.

Sub-step B2 (not shown in the figure): the mobile terminal compensates the source speech signal in the time domain through the time domain filter according to the time domain filter coefficient, and obtains the target speech signal.

In this embodiment of the present invention, through sub-step B1 and sub-step B2, the source voice signal can be compensated in the time domain, and the source voice signal can be compensated in the time domain. The calculation amount in the time domain is small, the delay is low, and efficient compensation can be realized. , and will not cause excessive occupation of computing resources.

As an example, as shown in Figure 4, it shows the way of compensation in the time domain. According to the input, the original PCM stream can be collected, the original PCM stream can be used as the source voice signal, and the vibration model can be trained according to the down-sampled voice signal, After the down-sampled speech signal is subjected to Fourier transform FFT, according to the frequency-voltage-vibration sense value corresponding relationship in the vibration model, the frequency domain compensation negative gain is obtained, and the frequency domain compensation negative gain and the preset negative gain and filtering are used. The corresponding relationship of the coefficients can determine the time-domain filter coefficients, and set the time-domain filter coefficients in the time-domain filter, then the time-domain filter can compensate the source speech signal in the time-domain according to the time-domain filter coefficients, and obtain target speech signal.

Preferably, the preset corresponding relationship between the negative gain and the filter coefficient includes: a preset corresponding relationship between the negative gain and the first filter coefficient, and a preset corresponding relationship between the negative gain and the second filter coefficient; wherein, the The first filter coefficient corresponds to the first time-domain filter, and the second filter coefficient corresponds to the second time-domain filter; the negative gain compensated according to the frequency domain, and the correspondence between the preset negative gain and the filter coefficient relationship to determine the time-domain filter coefficients, including:

In the case of using the first time-domain filter, the mobile terminal determines the time-domain filter coefficient according to the frequency-domain compensation negative gain and the corresponding relationship between the preset negative gain and the first filter coefficient.

When the mobile terminal adopts the second time-domain filter, the time-domain filter coefficient is determined according to the frequency-domain compensation negative gain and the corresponding relationship between the preset negative gain and the second filter coefficient.

In this embodiment of the present invention, it is considered that different mobile terminals may be correspondingly set with different time domain filters. For example, some mobile terminals may use FIR (Finite Impulse Response, finite unit impulse response) filters, FIR filters , the FIR filter coefficient corresponding to the negative gain in the frequency domain can be calculated by the frequency sampling method. The stability of the FIR filter is good, and it can ensure the arbitrary amplitude-frequency characteristics while having strict linear phase-frequency characteristics. At the same time, its unit sampling The response is of finite length; some mobile terminals use IIR filter (recursive filter), the IIR filter can obtain the fitted frequency response curve and the IIR filter coefficient through the recursive algorithm Yule-Walker, and the IIR filter is in a specific frequency range. There is a better amplitude control inside, which can better compensate the resonance front/valley generated in the vibration coupling process, and the IIR filter has fewer orders and low delay. Therefore, in this embodiment of the present invention, the preset corresponding relationship between the negative gain and the filter coefficient includes: the preset corresponding relationship between the negative gain and the first filter coefficient, and the preset corresponding relationship between the negative gain and the second filter coefficient.

In a specific application, the first filter coefficient may correspond to an FIR filter, and the second filter coefficient may correspond to an IIR filter. Then, when the mobile terminal adopts the FIR filter, the time domain filter coefficient is determined according to the frequency domain compensation negative gain and the preset corresponding relationship between the negative gain and the first filter coefficient. When the mobile terminal adopts the IIR filter, the time domain filter coefficient is determined according to the frequency domain compensation negative gain and the preset corresponding relationship between the negative gain and the second filter coefficient.

In specific applications, the time-domain filters can usually be set in groups. According to the different time-domain filter coefficients, the number of time-domain filters working in a specific time-domain filter group is selected, so as to realize the filtering of the source speech signal. different compensation.

Step 209: The mobile terminal controls the vibration of the sounding device according to the target voice signal.

To sum up, in this embodiment of the present invention, a source voice signal may be collected, and a negative gain that needs to be compensated for the source voice signal may be determined according to a preset vibration model. After compensating the source voice signal according to the negative gain, A target voice signal whose partial signal is weaker than the source voice signal can be obtained. Therefore, when the vibration of the sounding device is controlled by the target voice signal, the vibration of the sounding device will be weakened accordingly, thereby reducing the discomfort caused by excessive screen vibration.

It should be noted that, for the purpose of simple description, the foregoing method embodiments are all expressed as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence, because Certain steps may be performed in other orders or simultaneously in accordance with the present invention. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the present invention.

Referring to FIG. 5 , a structural block diagram of a mobile terminal 300 in an embodiment of the present invention is shown. include:

an acquisition module 310, configured to acquire the source voice signal;

A negative gain determination module 320, configured to determine a negative gain that needs to be compensated for the source voice signal according to a preset vibration model;

A target speech signal obtaining module 330, configured to compensate the source speech signal according to the negative gain to obtain a target speech signal;

The control module 340 is configured to control the sounding device to vibrate according to the target voice signal.

Preferably, referring to FIG. 6 , on the basis of FIG. 5 , in the above mobile terminal:

The vibration model includes: the corresponding relationship between voltage, frequency and vibration sense value; the negative gain determination module 320 includes:

A down-sampling sub-module 3201, configured to perform down-sampling processing on the source voice signal to obtain a down-sampled voice signal;

The first conversion sub-module 3202 is used to convert the down-sampled voice signal from the time domain to the frequency domain to obtain an amplitude-frequency curve of the down-sampled voice signal; Voltage amplitude information and frequency information;

The matching submodule 3203 is used to match the vibration sensing information of the down-sampled voice signal in the vibration model according to the voltage amplitude information and frequency information of the down-sampled voice signal;

Determining submodule 3204, configured to determine vibration value information that exceeds a preset vibration perception threshold in the vibration perception information of the down-sampled voice signal;

The frequency domain compensation negative gain determination sub-module 3205 is configured to determine the frequency domain compensation negative gain corresponding to the vibration perception information exceeding the preset vibration perception threshold.

Preferably, the target speech signal obtaining module 330 includes:

a second conversion submodule for converting the source speech signal from the time domain to the frequency domain;

a frequency-domain compensated speech signal obtaining sub-module, used for compensating the source speech signal converted to the frequency-domain in the frequency domain according to the frequency-domain compensation negative gain, to obtain a frequency-domain compensated speech signal;

The first target speech signal obtaining sub-module is used for converting the frequency domain compensated speech signal from the frequency domain to the time domain to obtain the target speech signal.

Preferably, the target speech signal obtaining module 330 includes:

a filter coefficient determination submodule, configured to determine the time domain filter coefficient according to the frequency domain compensation negative gain and the preset corresponding relationship between the negative gain and the filter coefficient;

The second target speech signal obtaining sub-module is used for compensating the source speech signal in the time domain through the time domain filter according to the time domain filter coefficient to obtain the target speech signal.

Preferably, the preset corresponding relationship between the negative gain and the filter coefficient includes: a preset corresponding relationship between the negative gain and the first filter coefficient, and a preset corresponding relationship between the negative gain and the second filter coefficient; wherein, the The first filter coefficient corresponds to the first time-domain filter, and the second filter coefficient corresponds to the second time-domain filter;

The filter coefficient determination submodule includes:

a first filter coefficient determination unit, configured to determine the compensation negative gain in the frequency domain and the corresponding relationship between the preset negative gain and the first filter coefficient according to the frequency domain compensation negative gain when the first time domain filter is used. time domain filter coefficients;

A second filter coefficient determination unit, configured to determine the compensation negative gain in the frequency domain and the corresponding relationship between the preset negative gain and the second filter coefficient when the second time domain filter is used. Time domain filter coefficients.

Preferably, the mobile terminal further includes:

The vibration model obtaining module 350 is configured to collect vibration sense values of the sound generating device corresponding to different input powers for each different preset input voltage to obtain the vibration model.

To sum up, in this embodiment of the present invention, a source voice signal may be collected, and a negative gain that needs to be compensated for the source voice signal may be determined according to a preset vibration model. After compensating the source voice signal according to the negative gain, A target voice signal whose partial signal is weaker than the source voice signal can be obtained. Therefore, when the vibration of the sounding device is controlled by the target voice signal, the vibration of the sounding device will be weakened accordingly, thereby reducing the discomfort caused by excessive screen vibration.

The above-mentioned mobile terminal can implement each process implemented by the mobile terminal in the method embodiments shown in FIG. 1 to FIG. 4 , and in order to avoid repetition, details are not repeated here.

FIG. 7 is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present invention.

The mobile terminal 500 includes but is not limited to: a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, a memory 509, a processor 510, and Power 511 and other components. Those skilled in the art can understand that the structure of the mobile terminal shown in FIG. 7 does not constitute a limitation on the mobile terminal, and the mobile terminal may include more or less components than the one shown, or combine some components, or different components layout. In this embodiment of the present invention, the mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The processor 510 is used to collect the source voice signal; according to a preset vibration model, determine the negative gain that needs to be compensated for the source voice signal; compensate the source voice signal according to the negative gain to obtain the target voice signal ; According to the target voice signal, control the sounding device to vibrate.

In this embodiment of the present invention, the source voice signal may be collected, and according to a preset vibration model, a negative gain that needs to be compensated for the source voice signal may be determined. After compensating the source voice signal according to the negative gain, some weak signals may be obtained. Therefore, when the vibration of the sounding device is controlled by the target voice signal, the vibration of the sounding device will be weakened accordingly, thereby reducing the discomfort caused by excessive screen vibration.

It should be understood that, in this embodiment of the present invention, the radio frequency unit 501 can be used for receiving and sending signals during sending and receiving of information or during a call. Specifically, after receiving the downlink data from the base station, it is processed by the processor 510; The uplink data is sent to the base station. Generally, the radio frequency unit 501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 501 can also communicate with the network and other devices through a wireless communication system.

The mobile terminal provides the user with wireless broadband Internet access through the network module 502, such as helping the user to send and receive emails, browse web pages, access streaming media, and the like.

The audio output unit 503 may convert audio data received by the radio frequency unit 501 or the network module 502 or stored in the memory 509 into audio signals and output as sound. Also, the audio output unit 503 may also provide audio output related to a specific function performed by the mobile terminal 500 (eg, call signal reception sound, message reception sound, etc.). The audio output unit 503 includes a speaker, a buzzer, a receiver, and the like.

The input unit 504 is used to receive audio or video signals. The input unit 504 may include a graphics processor (Graphics Processing Unit, GPU) 5041 and a microphone 5042, and the graphics processor 5041 is used for still pictures or video images obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode data is processed. The processed image frames may be displayed on the display unit 506 . The image frames processed by the graphics processor 5041 may be stored in the memory 509 (or other storage medium) or transmitted via the radio frequency unit 501 or the network module 502 . The microphone 5042 can receive sound and can process such sound into audio data. The processed audio data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 501 for output in the case of a telephone call mode.

The mobile terminal 500 also includes at least one sensor 505, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 5061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 5061 and the proximity sensor when the mobile terminal 500 is moved to the ear. / or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes), and can detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of mobile terminals (such as horizontal and vertical screen switching, related games , magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; the sensor 505 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, Infrared sensors, etc., are not repeated here.

The display unit 506 is used to display information input by the user or information provided to the user. The display unit 506 may include a display panel 5061, and the display panel 5061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 507 may be used to receive input numerical or character information, and generate key signal input related to user settings and function control of the mobile terminal. Specifically, the user input unit 507 includes a touch panel 5071 and other input devices 5072 . The touch panel 5071, also referred to as a touch screen, can collect the user's touch operations on or near it (such as the user's finger, stylus, etc., any suitable object or accessory on or near the touch panel 5071). operate). The touch panel 5071 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it to the touch controller. To the processor 510, the command sent by the processor 510 is received and executed. In addition, the touch panel 5071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 5071 , the user input unit 507 may also include other input devices 5072 . Specifically, other input devices 5072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.

Further, the touch panel 5071 can be covered on the display panel 5061. When the touch panel 5071 detects a touch operation on or near it, it transmits it to the processor 510 to determine the type of the touch event, and then the processor 510 determines the type of the touch event according to the touch The type of event provides a corresponding visual output on display panel 5061. Although in FIG. 7, the touch panel 5071 and the display panel 5061 are used as two independent components to realize the input and output functions of the mobile terminal, in some embodiments, the touch panel 5071 and the display panel 5061 may be integrated The input and output functions of the mobile terminal are implemented, which is not specifically limited here.

The interface unit 508 is an interface for connecting an external device to the mobile terminal 500 . For example, external devices may include wired or wireless headset ports, external power (or battery charger) ports, wired or wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input/output (I/O) ports, video I/O ports, headphone ports, and more. The interface unit 508 may be used to receive input (eg, data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 500 or may be used between the mobile terminal 500 and the external Transfer data between devices.

The memory 509 may be used to store software programs as well as various data. The memory 509 may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program (such as a sound playback function, an image playback function, etc.) required for at least one function, and the like; Data created by the use of the mobile phone (such as audio data, phone book, etc.), etc. Additionally, memory 509 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 510 is the control center of the mobile terminal, uses various interfaces and lines to connect various parts of the entire mobile terminal, runs or executes the software programs and/or modules stored in the memory 509, and calls the data stored in the memory 509. , perform various functions of the mobile terminal and process data, so as to monitor the mobile terminal as a whole. The processor 510 may include one or more processing units; preferably, the processor 510 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, etc., and the modem The processor mainly handles wireless communication. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 510. The mobile terminal 500 may also include a power supply 511 (such as a battery) for supplying power to various components. Preferably, the power supply 511 may be logically connected to the processor 510 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. and other functions.

In addition, the mobile terminal 500 includes some functional modules not shown, which will not be repeated here.

Preferably, an embodiment of the present invention further provides a mobile terminal, including a processor 510, a memory 509, and a computer program stored in the memory 509 and running on the processor 510, when the computer program is executed by the processor 510 The various processes of the foregoing vibration control method embodiments are implemented, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the above vibration control method embodiment can be implemented, and the same technology can be achieved. The effect, in order to avoid repetition, is not repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disk.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course hardware can also be used, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present invention.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present invention, without departing from the spirit of the present invention and the scope protected by the claims, many forms can be made, which all belong to the protection of the present invention.

Claims (8)

1. A vibration control method is applied to a mobile terminal, and the method comprises the following steps:

collecting a source speech signal;

determining a negative gain required to compensate the source speech signal according to a preset vibration model;

compensating the source speech signal according to the negative gain to obtain a target speech signal;

controlling the sound production device to vibrate according to the target voice signal;

wherein the vibration model includes: the corresponding relation between voltage, frequency and vibration inductance value; the determining the negative gain required to compensate the source speech signal according to the preset vibration model includes:

performing down-sampling processing on the source speech signal to obtain a down-sampled speech signal;

converting the down-sampled voice signal from a time domain to a frequency domain to obtain an amplitude-frequency curve of the down-sampled voice signal; the amplitude-frequency curve corresponds to voltage amplitude information and frequency information of the down-sampled voice signal;

matching the vibration sense information of the down-sampled voice signal in the vibration model according to the voltage amplitude information and the frequency information of the down-sampled voice signal;

determining vibration sensation value information exceeding a preset vibration sensation threshold value in the vibration sensation information of the down-sampled voice signal;

and determining the frequency domain compensation negative gain corresponding to the vibration sensation information exceeding the preset vibration sensation threshold value.

2. The method of claim 1, wherein compensating the source speech signal according to the negative gain to obtain a target speech signal comprises:

converting the source audio signal from a time domain to a frequency domain;

compensating the source speech signal converted into the frequency domain in the frequency domain according to the frequency domain compensation negative gain to obtain a frequency domain compensation speech signal;

and converting the frequency domain compensation voice signal from a frequency domain to a time domain to obtain the target voice signal.

3. The method of claim 1, wherein compensating the source speech signal according to the negative gain to obtain a target speech signal comprises:

determining a time domain filter coefficient according to the frequency domain compensation negative gain and a preset corresponding relation between the negative gain and a filter coefficient;

and according to the time-domain filter coefficient, compensating the source speech signal in the time domain through a time-domain filter to obtain the target speech signal.

4. The method of claim 3, wherein the predetermined negative gain versus filter coefficient relationship comprises: the corresponding relation between the preset negative gain and the first filter coefficient and the corresponding relation between the preset negative gain and the second filter coefficient; wherein the first filter coefficient corresponds to a first time domain filter and the second filter coefficient corresponds to a second time domain filter;

determining a time domain filter coefficient according to the frequency domain compensation negative gain and the corresponding relation between the preset negative gain and the filter coefficient, wherein the determining comprises:

under the condition of adopting the first time domain filter, determining a time domain filter coefficient according to the frequency domain compensation negative gain and the corresponding relation between the preset negative gain and a first filter coefficient;

and under the condition of adopting the second time domain filter, determining the coefficient of the time domain filter according to the frequency domain compensation negative gain and the corresponding relation between the preset negative gain and the second filter coefficient.

5. A mobile terminal, comprising:

the acquisition module is used for acquiring a source speech signal;

the negative gain determining module is used for determining the negative gain required to compensate the source speech signal according to a preset vibration model;

the target speech signal obtaining module is used for compensating the source speech signal according to the negative gain to obtain a target speech signal;

the control module is used for controlling the sound production device to vibrate according to the target voice signal;

wherein the vibration model includes: the corresponding relation between voltage, frequency and vibration inductance value; the negative gain determination module comprises:

the down-sampling submodule is used for performing down-sampling processing on the source speech signal to obtain a down-sampled speech signal;

the first conversion submodule is used for converting the down-sampled voice signal from a time domain to a frequency domain to obtain an amplitude-frequency curve of the down-sampled voice signal; the amplitude-frequency curve corresponds to voltage amplitude information and frequency information of the down-sampled voice signal;

the matching submodule is used for matching the vibration sense information of the down-sampling voice signal in the vibration model according to the voltage amplitude information and the frequency information of the down-sampling voice signal;

the determining submodule is used for determining vibration sense value information exceeding a preset vibration sense threshold value in the vibration sense information of the down-sampling voice signal;

and the frequency domain compensation negative gain determining submodule is used for determining the frequency domain compensation negative gain corresponding to the vibration sensation information exceeding the preset vibration sensation threshold value.

6. The mobile terminal of claim 5, wherein the target speech signal obtaining module comprises:

a second conversion sub-module for converting the source audio signal from a time domain to a frequency domain;

the frequency domain compensation voice signal obtaining submodule is used for compensating the source voice signal converted into the frequency domain in the frequency domain according to the frequency domain compensation negative gain to obtain a frequency domain compensation voice signal;

and the first target voice signal obtaining submodule is used for converting the frequency domain compensation voice signal from a frequency domain to a time domain to obtain the target voice signal.

7. The mobile terminal of claim 5, wherein the target speech signal obtaining module comprises:

the filter coefficient determining submodule is used for determining a time domain filter coefficient according to the frequency domain compensation negative gain and the corresponding relation between the preset negative gain and the filter coefficient;

and the second target speech signal obtaining submodule is used for compensating the source speech signal in the time domain through a time domain filter according to the time domain filter coefficient to obtain the target speech signal.

8. The mobile terminal of claim 7, wherein the preset negative gain and filter coefficient correspondence comprises: the corresponding relation between the preset negative gain and the first filter coefficient and the corresponding relation between the preset negative gain and the second filter coefficient; wherein the first filter coefficient corresponds to a first time domain filter and the second filter coefficient corresponds to a second time domain filter;

the filter coefficient determination sub-module includes:

a first filter coefficient determining unit, configured to determine, when the first time domain filter is used, a time domain filter coefficient according to the frequency domain compensation negative gain and a corresponding relationship between the preset negative gain and a first filter coefficient;

and the second filter coefficient determining unit is used for determining the coefficient of the time domain filter according to the frequency domain compensation negative gain and the corresponding relation between the preset negative gain and the second filter coefficient under the condition of adopting the second time domain filter.

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