EP0467499A3 - Audio apparatus with anti-howl function - Google Patents

Audio apparatus with anti-howl function Download PDF

Info

Publication number
EP0467499A3
EP0467499A3 EP19910301941 EP91301941A EP0467499A3 EP 0467499 A3 EP0467499 A3 EP 0467499A3 EP 19910301941 EP19910301941 EP 19910301941 EP 91301941 A EP91301941 A EP 91301941A EP 0467499 A3 EP0467499 A3 EP 0467499A3
Authority
EP
European Patent Office
Prior art keywords
howl
function
audio apparatus
audio
howl function
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.)
Withdrawn
Application number
EP19910301941
Other versions
EP0467499A2 (en
Inventor
Takahiko Terada
Yoshinobu Takamura
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Publication of EP0467499A2 publication Critical patent/EP0467499A2/en
Publication of EP0467499A3 publication Critical patent/EP0467499A3/en
Withdrawn legal-status Critical Current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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Filters That Use Time-Delay Elements (AREA)
EP19910301941 1990-07-16 1991-03-08 Audio apparatus with anti-howl function Withdrawn EP0467499A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP187676/90 1990-07-16
JP18767690A JPH0477093A (en) 1990-07-16 1990-07-16 Acoustic equipment provided with howling preventing function

Publications (2)

Publication Number Publication Date
EP0467499A2 EP0467499A2 (en) 1992-01-22
EP0467499A3 true EP0467499A3 (en) 1992-05-27

Family

ID=16210199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910301941 Withdrawn EP0467499A3 (en) 1990-07-16 1991-03-08 Audio apparatus with anti-howl function

Country Status (2)

Country Link
EP (1) EP0467499A3 (en)
JP (1) JPH0477093A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228479A1 (en) * 1992-08-27 1994-03-03 Sel Alcatel Ag Circuit arrangement for electro-acoustic systems
DE4229910A1 (en) * 1992-09-08 1994-03-10 Sel Alcatel Ag Process for improving the acoustic attenuation of electroacoustic systems
DE4229912A1 (en) * 1992-09-08 1994-03-10 Sel Alcatel Ag Method for improving the transmission properties of an electroacoustic system
JPH0750897A (en) * 1993-02-19 1995-02-21 Onkyo Corp Voice signal amplifying device
US5999631A (en) * 1996-07-26 1999-12-07 Shure Brothers Incorporated Acoustic feedback elimination using adaptive notch filter algorithm
US7280958B2 (en) * 2005-09-30 2007-10-09 Motorola, Inc. Method and system for suppressing receiver audio regeneration
JP6079045B2 (en) * 2012-08-21 2017-02-15 沖電気工業株式会社 Howling suppression device and program, and adaptive notch filter and program
CN105228056B (en) * 2015-10-21 2018-06-19 西安航空学院 A kind of method and system for eliminating microphone whistle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091236A (en) * 1976-09-07 1978-05-23 The University Of Akron Automatically tunable notch filter and method for suppression of acoustical feedback
US4232192A (en) * 1978-05-01 1980-11-04 Starkey Labs, Inc. Moving-average notch filter
EP0197758A2 (en) * 1985-04-02 1986-10-15 Matsushita Electric Industrial Co., Ltd. Tone restoring apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS631295A (en) * 1986-06-20 1988-01-06 Matsushita Electric Ind Co Ltd Loud speaking device
JPS6315598A (en) * 1986-07-08 1988-01-22 Matsushita Electric Ind Co Ltd Howling suppressing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091236A (en) * 1976-09-07 1978-05-23 The University Of Akron Automatically tunable notch filter and method for suppression of acoustical feedback
US4232192A (en) * 1978-05-01 1980-11-04 Starkey Labs, Inc. Moving-average notch filter
EP0197758A2 (en) * 1985-04-02 1986-10-15 Matsushita Electric Industrial Co., Ltd. Tone restoring apparatus

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JOURNAL OF THE AUDIO ENGINEERING SOCIETY. vol. 32, no. 3, March 1984, NEW YORK US pages 144 - 150; J.RODDNEY COX: 'Squealer Killer with Real-Time Equalization' *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 200 (E-619)9 June 1988 & JP-A-63 001 295 ( MATSUSHITA ELECTRIC IND CO LTD ) *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 221 (E-625)23 June 1988 & JP-A-63 015 598 ( MATSUSHITA ELECTRIC IND CO LTD ) *

Also Published As

Publication number Publication date
JPH0477093A (en) 1992-03-11
EP0467499A2 (en) 1992-01-22

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