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WO2006137010A3 - Thermo-acoustic transducers - Google Patents

Thermo-acoustic transducers Download PDF

Info

Publication number
WO2006137010A3
WO2006137010A3 PCT/IB2006/051978 IB2006051978W WO2006137010A3 WO 2006137010 A3 WO2006137010 A3 WO 2006137010A3 IB 2006051978 W IB2006051978 W IB 2006051978W WO 2006137010 A3 WO2006137010 A3 WO 2006137010A3
Authority
WO
WIPO (PCT)
Prior art keywords
thermo
control unit
quality
acoustic
coupled
Prior art date
Application number
PCT/IB2006/051978
Other languages
French (fr)
Other versions
WO2006137010A2 (en
Inventor
Daniel W E Schobben
Josephus C H Zeegers
Ronaldus M Aarts
Okke Ouweltjes
Original Assignee
Koninkl Philips Electronics Nv
Daniel W E Schobben
Josephus C H Zeegers
Ronaldus M Aarts
Okke Ouweltjes
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 Koninkl Philips Electronics Nv, Daniel W E Schobben, Josephus C H Zeegers, Ronaldus M Aarts, Okke Ouweltjes filed Critical Koninkl Philips Electronics Nv
Publication of WO2006137010A2 publication Critical patent/WO2006137010A2/en
Publication of WO2006137010A3 publication Critical patent/WO2006137010A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/02—Transducers using more than one principle simultaneously
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

A thermo-acoustic transducer device (8) comprises a substantially hollow body (10) in which a thermo-acoustic element (11) is accommodated, and a heating control unit (2) coupled to the thermo-acoustic element (11) for controlling the temperature gradient of the element. A loudspeaker (14) is acoustically coupled to the hollow body (10). The heating control unit (2) may be arranged for being controlled by a control signal produced by a quality control unit (5) so as to control the quality iactor (Q) of the thermo-acoustic device. The quality control unit (5) may be coupled to an audio amplifier (4) to control the quality factor in dependence of properties of an audio signal.
PCT/IB2006/051978 2005-06-24 2006-06-20 Thermo-acoustic transducers WO2006137010A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05105650 2005-06-24
EP05105650.5 2005-06-24

Publications (2)

Publication Number Publication Date
WO2006137010A2 WO2006137010A2 (en) 2006-12-28
WO2006137010A3 true WO2006137010A3 (en) 2007-04-12

Family

ID=37570822

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/051978 WO2006137010A2 (en) 2005-06-24 2006-06-20 Thermo-acoustic transducers

Country Status (1)

Country Link
WO (1) WO2006137010A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7202095B2 (en) * 2018-07-27 2023-01-11 株式会社Ｃｓイノベーション alarm device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310731A (en) * 1979-08-02 1982-01-12 Dynamic Compliance, Incorporated Thermal motion transducer
JPH01226300A (en) * 1988-03-04 1989-09-08 Sony Corp Sound converter
WO2002086445A2 (en) * 2001-04-20 2002-10-31 Clever Fellows Innovation Consortium Mechanical resonator and method for thermoacoustic systems
WO2003049491A2 (en) * 2001-12-03 2003-06-12 University Of Utah Research Foundation High frequency thermoacoustic energy converter
WO2005027569A1 (en) * 2003-09-16 2005-03-24 Koninklijke Philips Electronics N.V. High efficiency audio reproduction

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310731A (en) * 1979-08-02 1982-01-12 Dynamic Compliance, Incorporated Thermal motion transducer
JPH01226300A (en) * 1988-03-04 1989-09-08 Sony Corp Sound converter
WO2002086445A2 (en) * 2001-04-20 2002-10-31 Clever Fellows Innovation Consortium Mechanical resonator and method for thermoacoustic systems
WO2003049491A2 (en) * 2001-12-03 2003-06-12 University Of Utah Research Foundation High frequency thermoacoustic energy converter
WO2005027569A1 (en) * 2003-09-16 2005-03-24 Koninklijke Philips Electronics N.V. High efficiency audio reproduction

Also Published As

Publication number Publication date
WO2006137010A2 (en) 2006-12-28

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