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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
Legal status (The legal status 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 status listed.)
Ceased
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
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of WO2006137010A2 publication Critical patent/WO2006137010A2/en
Publication of WO2006137010A3 publication Critical patent/WO2006137010A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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 Ceased WO2006137010A2 (en)

Applications Claiming Priority (2)

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