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WO2018149075A1 - Casque d'écoute antibruit et dispositif électronique - Google Patents

Casque d'écoute antibruit et dispositif électronique Download PDF

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Publication number
WO2018149075A1
WO2018149075A1 PCT/CN2017/089579 CN2017089579W WO2018149075A1 WO 2018149075 A1 WO2018149075 A1 WO 2018149075A1 CN 2017089579 W CN2017089579 W CN 2017089579W WO 2018149075 A1 WO2018149075 A1 WO 2018149075A1
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WO
WIPO (PCT)
Prior art keywords
microphone
noise
main
noise reduction
noise canceling
Prior art date
Application number
PCT/CN2017/089579
Other languages
English (en)
Chinese (zh)
Inventor
赵燕鹏
谢萍
Original Assignee
歌尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2018149075A1 publication Critical patent/WO2018149075A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones

Definitions

  • the present invention relates to the field of earphone technology, and more particularly to a noise canceling earphone and an electronic device to which the noise canceling earphone is applied.
  • wireless earphones generally have an uplink noise reduction function, and uplink noise reduction is call noise reduction.
  • uplink noise reduction is call noise reduction.
  • the microphone receives the speech signal of the speaker and the noise signal of the surrounding environment, and the above two signals are transmitted to the noise reduction chip, and the noise reduction algorithm is used to filter out the environmental noise signal to ensure that the other party can still listen. To a clear voice signal.
  • the call noise reduction function is usually implemented by a single microphone/double microphone noise reduction algorithm.
  • the principle of the dual-mike noise reduction algorithm is as follows: the microphone close to the speaker's mouth is the main microphone, which is mainly used to pick up the human voice signal; the microphone near the human ear is the secondary microphone, which is mainly used for picking up noise and voice signals.
  • the time when the speech signal reaches the main and sub-microphones is different due to the difference in distance, and the noise reduction algorithm performs noise suppression according to the time difference.
  • the noise reduction performance of the microphone array There are two key parameters for the noise reduction performance of the microphone array: one is the distance between the primary and secondary microphones, and the other is the angle between the secondary microphone array connection and the voice source (such as the mouth) to be enhanced.
  • the distance between the main and sub-microphones is large, and the angle between the main and sub-microphones is small, so the noise reduction performance is good, and vice versa.
  • the distance from the product to the mouth is far, and the conventional distance from the external ear canal to the center of the lips is about 130mm. This is also the distance between the center of the earphone wireless microphone or the microphone array to the center of the lip; 2. The center of the microphone or microphone array is almost picked up from the center of the lip, and the microphone array is connected to the microphone due to the stability requirements.
  • the angle of the line between the array and the center of the lips is usually larger than 30 degrees.
  • the current wireless earphones are small in size, and the distance between the primary and secondary microphones is difficult to meet the minimum distance. From the request. Due to the size of the main microphone, the main microphone is far from the mouth and the call quality is not good.
  • a noise canceling earphone comprises an earphone housing, a main microphone, a noise reduction microphone, an enhancement microphone and a main control chip, and the main microphone, the noise reduction microphone, the enhancement microphone and the main control chip are disposed in the earphone housing,
  • the primary microphone, the noise reduction microphone, and the enhanced microphone are coupled to the master chip, the enhanced microphone being in direct or indirect contact with the skin of a user's ear, the enhanced microphone being configured for receiving through a bone Conducted speech signal.
  • the earphone housing includes a front case for insertion into a user's ear canal, the front case enclosing a front cavity, and the booster microphone is disposed within the front cavity.
  • a sensing element is further disposed in the front cavity, the sensing element includes a contact, an elastic wall and a sidewall, the elastic wall, the sidewall and the The reinforcing microphones are enclosed together to form a closed pressure chamber, and a through hole is provided in the front case, the contact passing through the through hole and connected to the elastic wall, the contact One end of the resilient wall is in contact with the skin of the user's ear, the contact being configured to transmit a bone-conducted voice signal to the resilient wall to cause a change in pressure within the pressure chamber, The booster microphone is configured to sense the change in pressure to vibrate and convert the vibration into an electrical signal.
  • the main microphone is located on a line connecting the noise reduction microphone to a user's mouth.
  • an auxiliary microphone is further included, the auxiliary microphone being located between the main microphone and the noise reduction microphone.
  • the primary microphone and the auxiliary microphone are located on a line connecting the noise reduction microphone to a user's mouth.
  • the booster microphone is disposed at a portion of the front case that is adjacent to a user's vocal cord.
  • a telescopic device is further included, the telescopic device being configured to change a distance between the main microphone and the noise reduction microphone.
  • an electronic device includes the invention The noise canceling earphone provided.
  • the noise canceling earphone has an enhanced microphone capable of receiving a voice signal transmitted via the bone.
  • the speech signal can be made more accurate, so that the noise reduction processing of the main control chip can be performed, and noise reduction can be performed more effectively.
  • the signal-to-noise ratio of the noise canceling headphones is improved.
  • the enhanced microphone can compensate the voice signal received by the main microphone, which improves the call performance of the noise canceling earphone.
  • the voice signal can be accurately picked up by the enhanced microphone, so that the noise canceling earphone maintains a good noise reduction effect.
  • the noise canceling earphone can determine whether the user is speaking. Voice mode and no voice mode can be set on the master chip. The noise canceling headphones switch between the two modes according to the user's usage.
  • FIG. 1 is a schematic structural view of a noise canceling earphone according to an embodiment of the present invention.
  • FIG. 2 is a partial schematic view of a noise canceling earphone in accordance with an embodiment of the present invention.
  • FIG. 3 is a schematic structural view of a noise canceling earphone with a telescopic device according to an embodiment of the present invention.
  • 11 earphone housing; 12: rear cavity; 13: front cavity; 14: auxiliary microphone; 15: main microphone; 16: noise canceling microphone; 17: enhanced microphone; 18: front case; 19: contact; Wall; 21: side wall; 22: pressure chamber; 23: main control chip; 24: skin inside the ear canal; 25: telescopic rod.
  • a noise canceling earphone is provided.
  • the noise canceling earphone can be a wireless earphone or a wired earphone.
  • the noise canceling earphone can be an in-ear earphone, an over-ear earphone or a headset.
  • the noise canceling earphone includes a headphone housing 11, a main microphone 15, a noise canceling microphone 16, an enhanced microphone 17, and a main control chip 23.
  • the main microphone 15, the noise reduction microphone 16, the booster microphone 17, and the main control chip 23 are disposed in the earphone casing 11.
  • the main microphone 15, the noise reduction microphone 16, and the booster microphone 17 are connected to the main control chip 23.
  • the enhanced microphone 17 is in direct or indirect contact with the skin of the user's ear.
  • the enhanced microphone 17 is configured to receive a voice signal conducted through the bone and transmit the signal to the master chip 23.
  • the vibrations generated by the user's vocal cords are transmitted through the human skeleton and then transmitted to the enhanced microphone 17 via the skin to be received.
  • the speech signal transmitted through the bone is less murmur, which makes the pickup of the speech signal more accurate.
  • the main microphone 15 is for picking up a voice signal and transmitting the signal to the master chip 23.
  • the main microphone 15 inevitably picks up and transmits a noise signal.
  • the noise reduction microphone 16 is for picking up the voice signal and the noise signal of the surrounding environment, and transmitting the two signals to the master chip 23.
  • the main control chip 23 receives the speech signals from the enhanced microphone 17, the main microphone 15, and the noise canceling microphone 16, performs noise reduction according to the built-in noise reduction algorithm, and enhances the speech signal.
  • the main control chip 23 is further configured to send the noise reduction processed voice signal to the mobile terminal for playing by the mobile terminal. For example, send it to a smartphone, tablet, etc.
  • the noise canceling earphone has an enhanced microphone 17 that is capable of receiving a voice signal that is transmitted via the bone.
  • the speech signal can be made more accurate, so that the noise reduction processing of the main control chip 23 can be performed, and noise reduction can be performed more efficiently.
  • the signal-to-noise ratio of the noise canceling earphone is improved.
  • the enhanced microphone 17 can compensate the voice signal received by the main microphone 15 and improve the call effect of the noise canceling earphone.
  • the enhanced microphone can improve the low frequency effect of the noise canceling headphones.
  • the voice signal can be accurately picked up by the enhanced microphone 17, so that the noise canceling earphone maintains a good noise reduction effect.
  • the noise canceling earphone can determine whether the user is talking.
  • a voice mode and a voiceless mode may be provided on the main control chip 23.
  • the noise canceling headphones switch between the two modes according to the user's usage.
  • the voiceless mode is turned on. For example, turn off the noise reduction software in this mode, or turn on low power noise reduction to save power. If the noise canceling earphone determines that the user is speaking, the voice mode is turned on. For example, in this mode, the noise reduction software is turned on to make a normal call in the noise reduction mode.
  • 1 is a schematic structural view of a noise canceling earphone according to an embodiment of the present invention.
  • 2 is a partial schematic view of a noise canceling earphone in accordance with an embodiment of the present invention.
  • the earphone housing 11 includes a front case 18 for insertion into the ear canal of the user and a rear case located outside the ear canal of the user.
  • the front case 18 is coupled to the rear case.
  • a front chamber 13 and a rear chamber 12 that communicate with each other are formed inside the earphone casing 11.
  • the front casing 18 encloses a front cavity 13 and the rear casing encloses a rear cavity 12.
  • the main microphone 15, the noise reduction microphone 16, and the main control chip 23 are disposed in the rear chamber 12.
  • the booster microphone 17 is disposed in the front chamber 13.
  • the enhanced microphone 17 is, for example, a condenser microphone.
  • the front housing 18 is inserted into the ear canal of the user and can create a large compressive force with the skin 24 on the inside of the ear canal. In this way, the reinforcing microphone 17 can be brought into closer contact with the skin 24 on the inner side of the ear canal of the user, and noise interference can be effectively avoided, thereby making the received bone conduction speech signal more accurate.
  • the enhanced microphone 17 is disposed in the back shell and is in contact with the skin within the user's auricle. It is also capable of receiving a speech signal of bone conduction.
  • the noise canceling earphone further includes a sensing element.
  • the enhanced microphone 17 is in indirect contact with the skin of the user's ear.
  • the sensing element is used to deliver a speech signal to the enhanced microphone 17.
  • the sensing element is disposed within the front cavity 13.
  • the sensing element includes a contact 19, an elastic wall 20 and a side wall 21.
  • the resilient wall 20, side walls 21 and reinforcing microphone 17 are enclosed to form a closed pressure chamber 22.
  • a gas having a set pressure is filled in the pressure chamber 22.
  • the sensing element is made of a material such as rubber or silicone.
  • a through hole is provided in the front case 18.
  • the contact 19 passes through the through hole and is coupled to the elastic wall 20.
  • the contact 19 can slide along the through hole.
  • One end of the contact 19 remote from the elastic wall 20 is in contact with the skin of the user's ear.
  • the contact 19 is configured to transmit a bone conduction speech signal to the resilient wall 20 to cause a change in pressure within the pressure chamber 22.
  • the booster microphone 17 is configured to sense the change in pressure to vibrate and convert the vibration into an electrical signal.
  • the bone conduction speech signal causes the contact 19 to vibrate.
  • the contact 19 causes the elastic wall 20 to vibrate.
  • the vibration of the elastic wall 20 changes the volume of the pressure chamber 22.
  • the change in pressure causes the enhanced microphone 17 to vibrate.
  • the enhanced microphone 17 converts the vibration signal into an electrical signal.
  • the enhanced microphone 17 can accurately pick up the bone conduction speech signal. Further, the enhanced microphone 17 can be free from the mounting position.
  • the enhanced microphone 17 is disposed at a portion of the front case 18 that is adjacent to the user's vocal cords.
  • the position of the enhanced microphone 17 is such that the bone conduction path of the bone signal is minimized, thereby making the received speech signal more accurate.
  • the main microphone 15 is located on the line connecting the noise canceling microphone 16 to the user's mouth.
  • the noise canceling microphone 16 is located at the top of the rear case and away from the user's mouth.
  • the main microphone 15 is located at the bottom of the rear case and is close to the user's mouth.
  • the main microphone 15 is located on the line connecting the noise canceling microphone 16 to the user's mouth.
  • the noise canceling headphones can pick up the voice signal more accurately and have a higher signal-to-noise ratio.
  • the noise canceling earphone further includes an auxiliary microphone 14 that is located between the main microphone 15 and the noise canceling microphone 16.
  • the auxiliary microphone 14 is used to assist in picking up the voice signal emitted by the user's mouth.
  • the auxiliary microphone, the main microphone and the noise-reduction microphone form a microphone array, which makes the noise-reducing headphone voice more accurate and has a higher signal-to-noise ratio.
  • the directionality of the microphone array can be improved by the second-order beam, and the pickup effect of the high-frequency speech signal in a strong noise environment can be improved.
  • the primary microphone 15 and the secondary microphone 14 are located on the line connecting the noise reduction microphone 16 to the user's mouth.
  • the noise canceling headphones can pick up the voice signal more accurately and have a higher signal-to-noise ratio.
  • the noise canceling earphone further includes a telescopic device.
  • the telescopic device is configured to change the distance between the main microphone 15 and the noise reduction microphone 16.
  • the expansion and contraction portion employs a telescopic rod 25.
  • a hole is provided in the rear case. The tunnel extends into the rear chamber 12.
  • the telescopic rod 25 slides along the tunnel.
  • the main microphone 15 is disposed at the outer end of the telescopic rod 25. In the stowed state, the telescopic rod 25 slides into the tunnel and the main microphone 15 is embedded in the outer surface of the earplug.
  • the noise canceling earphone is suitable for use in a low noise environment.
  • the noise canceling earphone is suitable for use in a strong noise environment.
  • an electronic device includes the noise canceling earphone provided by the present invention.
  • the electronic device can be, but is not limited to, a mobile phone, a notebook computer, a tablet computer, a radio, a smart watch, smart glasses, a PSP, a virtual reality device (VR), or an augmented reality device (AR).
  • the electronic device has the characteristics of good voice effect.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

L'invention concerne un casque d'écoute antibruit et un dispositif électronique. Le casque d'écoute comprend un boîtier de casque d'écoute, un microphone principal, un microphone antibruit, un microphone d'amélioration et une puce de commande principale. Le microphone principal, le microphone antibruit, le microphone d'amélioration et la puce de commande principale sont disposés à l'intérieur du boîtier de casque d'écoute. Le microphone principal, le microphone antibruit et le microphone d'amélioration sont connectés à la puce de commande principale. Le microphone d'amélioration est en contact direct ou indirect avec la peau de l'oreille d'un utilisateur. Le microphone d'amélioration est utilisé pour recevoir un signal vocal à conduction osseuse. Le casque d'écoute antibruit a un rapport signal sur bruit élevé. FIG. 1 :
PCT/CN2017/089579 2017-02-14 2017-06-22 Casque d'écoute antibruit et dispositif électronique WO2018149075A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201720133228.7 2017-02-14
CN201720133228.7U CN206640738U (zh) 2017-02-14 2017-02-14 降噪耳机以及电子设备

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Publication Number Publication Date
WO2018149075A1 true WO2018149075A1 (fr) 2018-08-23

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WO (1) WO2018149075A1 (fr)

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US11582563B2 (en) 2014-01-06 2023-02-14 Shenzhen Shokz Co., Ltd. Systems and methods for suppressing sound leakage
US11617045B2 (en) 2014-01-06 2023-03-28 Shenzhen Shokz Co., Ltd. Systems and methods for suppressing sound leakage
US11582564B2 (en) 2014-01-06 2023-02-14 Shenzhen Shokz Co., Ltd. Systems and methods for suppressing sound leakage
US11570556B2 (en) 2014-01-06 2023-01-31 Shenzhen Shokz Co., Ltd. Systems and methods for suppressing sound leakage
US11706574B2 (en) 2014-01-06 2023-07-18 Shenzhen Shokz Co., Ltd. Systems and methods for suppressing sound leakage
CN108401204B (zh) * 2018-01-22 2020-01-03 广东思派康电子科技有限公司 一种新型主动降噪耳机
CN108429950A (zh) * 2018-03-22 2018-08-21 恒玄科技（上海）有限公司 低功耗的高效降噪耳机及降噪系统
CN108322845B (zh) * 2018-04-27 2020-05-15 歌尔股份有限公司 一种降噪耳机
CN108696785B (zh) * 2018-07-24 2019-10-29 歌尔股份有限公司 多麦降噪耳机及方法
CN108810716A (zh) * 2018-08-17 2018-11-13 歌尔科技有限公司 降噪耳机及其控制方法
CN109348340B (zh) * 2018-11-14 2024-06-04 中山阿迪通电子科技有限公司 一种带有降噪麦克风通话功能的耳机前盖装置
KR102533570B1 (ko) * 2019-04-30 2023-05-19 썬전 샥 컴퍼니 리미티드 음향 출력 장치
CN113038318B (zh) * 2019-12-25 2022-06-07 荣耀终端有限公司 一种语音信号处理方法及装置
CN111327985A (zh) * 2020-03-06 2020-06-23 华勤通讯技术有限公司 一种耳机降噪方法和装置
CN112116918B (zh) * 2020-09-27 2023-09-22 北京声加科技有限公司 语音信号增强处理方法和耳机

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CN101940000A (zh) * 2008-02-08 2011-01-05 株式会社坦姆科日本 振动拾取传声器
CN102084668A (zh) * 2008-05-22 2011-06-01 伯恩同通信有限公司 处理信号的方法和系统
CN204993766U (zh) * 2015-09-19 2016-01-20 中山阿迪通电子科技有限公司 一种双降噪入耳式耳机
CN106254991A (zh) * 2016-09-12 2016-12-21 歌尔股份有限公司 降噪耳机及其降噪方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5933506A (en) * 1994-05-18 1999-08-03 Nippon Telegraph And Telephone Corporation Transmitter-receiver having ear-piece type acoustic transducing part
CN101940000A (zh) * 2008-02-08 2011-01-05 株式会社坦姆科日本 振动拾取传声器
CN102084668A (zh) * 2008-05-22 2011-06-01 伯恩同通信有限公司 处理信号的方法和系统
CN204993766U (zh) * 2015-09-19 2016-01-20 中山阿迪通电子科技有限公司 一种双降噪入耳式耳机
CN106254991A (zh) * 2016-09-12 2016-12-21 歌尔股份有限公司 降噪耳机及其降噪方法

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