EP1903833A1 - Rückkopplungsunterdrückung in einem Tonsystem - Google Patents

Rückkopplungsunterdrückung in einem Tonsystem Download PDF

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Publication number
EP1903833A1
EP1903833A1 EP06121006A EP06121006A EP1903833A1 EP 1903833 A1 EP1903833 A1 EP 1903833A1 EP 06121006 A EP06121006 A EP 06121006A EP 06121006 A EP06121006 A EP 06121006A EP 1903833 A1 EP1903833 A1 EP 1903833A1
Authority
EP
European Patent Office
Prior art keywords
sound
signal
sound signal
peak
filter
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Withdrawn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
EP06121006A
Other languages
English (en)
French (fr)
Inventor
Deepak Somasundaram
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.)
Phonic Ear Inc
Original Assignee
Phonic Ear Inc
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 Phonic Ear Inc filed Critical Phonic Ear Inc
Priority to EP06121006A priority Critical patent/EP1903833A1/de
Publication of EP1903833A1 publication Critical patent/EP1903833A1/de
Withdrawn legal-status Critical Current

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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
EP06121006A 2006-09-21 2006-09-21 Rückkopplungsunterdrückung in einem Tonsystem Withdrawn EP1903833A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06121006A EP1903833A1 (de) 2006-09-21 2006-09-21 Rückkopplungsunterdrückung in einem Tonsystem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06121006A EP1903833A1 (de) 2006-09-21 2006-09-21 Rückkopplungsunterdrückung in einem Tonsystem

Publications (1)

Publication Number Publication Date
EP1903833A1 true EP1903833A1 (de) 2008-03-26

Family

ID=37571032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06121006A Withdrawn EP1903833A1 (de) 2006-09-21 2006-09-21 Rückkopplungsunterdrückung in einem Tonsystem

Country Status (1)

Country Link
EP (1) EP1903833A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0599450A2 (de) * 1992-11-25 1994-06-01 Matsushita Electric Industrial Co., Ltd. Tonverstärkervorrichtung mit automatischer Unterdrückung akustischer Rückkopplung
US5677987A (en) * 1993-11-19 1997-10-14 Matsushita Electric Industrial Co., Ltd. Feedback detector and suppressor
EP0843502A1 (de) * 1996-11-13 1998-05-20 Yamaha Corporation Schaltung zur Erkennung und Verhinderung von akustischen Rückkopplungen und Verwendung einer derartigen Schaltung in einem Lautsprechersystem
US20030144840A1 (en) * 2002-01-30 2003-07-31 Changxue Ma Method and apparatus for speech detection using time-frequency variance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0599450A2 (de) * 1992-11-25 1994-06-01 Matsushita Electric Industrial Co., Ltd. Tonverstärkervorrichtung mit automatischer Unterdrückung akustischer Rückkopplung
US5677987A (en) * 1993-11-19 1997-10-14 Matsushita Electric Industrial Co., Ltd. Feedback detector and suppressor
EP0843502A1 (de) * 1996-11-13 1998-05-20 Yamaha Corporation Schaltung zur Erkennung und Verhinderung von akustischen Rückkopplungen und Verwendung einer derartigen Schaltung in einem Lautsprechersystem
US20030144840A1 (en) * 2002-01-30 2003-07-31 Changxue Ma Method and apparatus for speech detection using time-frequency variance

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