ATE315323T1 - DEVICE AND METHOD FOR SUPPRESSING FEEDBACK - Google Patents
DEVICE AND METHOD FOR SUPPRESSING FEEDBACKInfo
- Publication number
- ATE315323T1 ATE315323T1 AT03811364T AT03811364T ATE315323T1 AT E315323 T1 ATE315323 T1 AT E315323T1 AT 03811364 T AT03811364 T AT 03811364T AT 03811364 T AT03811364 T AT 03811364T AT E315323 T1 ATE315323 T1 AT E315323T1
- Authority
- AT
- Austria
- Prior art keywords
- signal
- loudspeaker
- microphone
- feedback
- filter
- Prior art date
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
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
- H04R25/453—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback electronically
-
- 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)
- Neurosurgery (AREA)
- Circuit For Audible Band Transducer (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Paper (AREA)
Abstract
The invention relates to a device for suppressing a feedback in an environment containing a microphone (10) and a loudspeaker (13), comprising a device (20), for embedding a test signal in a loudspeaker signal, a microphone signal, or a modified microphone signal, preferably using a psychoacoustic marking threshold by means of a pseudo-noise test signal, a device (50) for determining a property of a transmission path in the environment between the loudspeaker (13) and the microphone (10), using the embedded test signal and the microphone signal, a filter (40), for filtering the loudspeaker signal, to give a filtered loudspeaker signal, whereby the filter may be adjusted with regard to the filter characteristics thereof by the determining device (50) to match the same to the properties of the transmission path and a device (30) for subtracting the filtered loudspeaker signal from the microphone signal to give a modified microphone signal in which the feedback as a result of the loudspeaker is reduced. The feedback suppression concept achieves an effective feedback suppression without a loss in audio quality in particular without detracting from the artistic work of an artist.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10254407A DE10254407B4 (en) | 2002-11-21 | 2002-11-21 | Apparatus and method for suppressing feedback |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE315323T1 true ATE315323T1 (en) | 2006-02-15 |
Family
ID=32318607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT03811364T ATE315323T1 (en) | 2002-11-21 | 2003-11-06 | DEVICE AND METHOD FOR SUPPRESSING FEEDBACK |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1518441B1 (en) |
AT (1) | ATE315323T1 (en) |
AU (1) | AU2003276271A1 (en) |
DE (2) | DE10254407B4 (en) |
HK (1) | HK1072522A1 (en) |
WO (1) | WO2004047484A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4215015B2 (en) * | 2005-03-18 | 2009-01-28 | ヤマハ株式会社 | Howling canceller and loudspeaker equipped with the same |
DE602006016121D1 (en) | 2005-06-09 | 2010-09-23 | Koninkl Philips Electronics Nv | METHOD AND SYSTEM FOR DETERMINING THE DISTANCE BETWEEN LOUDSPEAKERS |
DE102005028742B3 (en) | 2005-06-21 | 2006-09-21 | Siemens Audiologische Technik Gmbh | Hearing aid equipment, has signal source delivering test signal that is not directly coming from input signal, where information signal is delivered by equipment such that information signal is delivered from source and used as test signal |
EP2976898B1 (en) * | 2013-03-19 | 2017-03-08 | Koninklijke Philips N.V. | Method and apparatus for determining a position of a microphone |
CN113747336B (en) * | 2021-08-27 | 2023-01-10 | 音曼(北京)科技有限公司 | Method for tuning and adapting sound field in different spaces based on audio processor |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55105494A (en) * | 1979-02-06 | 1980-08-13 | Mitsubishi Electric Corp | Loudspeaking device |
JPS58200690A (en) * | 1982-05-18 | 1983-11-22 | Nippon Telegr & Teleph Corp <Ntt> | Howling preventive circuit |
GB8919591D0 (en) * | 1989-08-30 | 1989-10-11 | Gn Davavox As | Hearing aid having compensation for acoustic feedback |
CA2100015A1 (en) * | 1992-07-29 | 1994-01-30 | Resound Corporation | Auditory prosthesis with user-controlled feedback cancellation |
DK0930801T3 (en) * | 1998-01-14 | 2009-02-23 | Bernafon Ag | Circuits and method for adaptive suppression of acoustic feedback |
US6347148B1 (en) * | 1998-04-16 | 2002-02-12 | Dspfactory Ltd. | Method and apparatus for feedback reduction in acoustic systems, particularly in hearing aids |
DE19933317C2 (en) * | 1999-07-16 | 2002-07-04 | Bayerische Motoren Werke Ag | Method and device for determining the acoustic room properties, in particular of a passenger compartment in a motor vehicle |
US6434247B1 (en) * | 1999-07-30 | 2002-08-13 | Gn Resound A/S | Feedback cancellation apparatus and methods utilizing adaptive reference filter mechanisms |
-
2002
- 2002-11-21 DE DE10254407A patent/DE10254407B4/en not_active Expired - Fee Related
-
2003
- 2003-11-06 AU AU2003276271A patent/AU2003276271A1/en not_active Abandoned
- 2003-11-06 AT AT03811364T patent/ATE315323T1/en not_active IP Right Cessation
- 2003-11-06 WO PCT/EP2003/012437 patent/WO2004047484A1/en not_active Application Discontinuation
- 2003-11-06 DE DE50302143T patent/DE50302143D1/en not_active Expired - Lifetime
- 2003-11-06 EP EP03811364A patent/EP1518441B1/en not_active Expired - Lifetime
-
2005
- 2005-06-14 HK HK05104954A patent/HK1072522A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE10254407A1 (en) | 2004-06-17 |
EP1518441A1 (en) | 2005-03-30 |
DE10254407B4 (en) | 2006-01-26 |
AU2003276271A1 (en) | 2004-06-15 |
DE50302143D1 (en) | 2006-03-30 |
HK1072522A1 (en) | 2005-08-26 |
EP1518441B1 (en) | 2006-01-04 |
WO2004047484A1 (en) | 2004-06-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
REN | Ceased due to non-payment of the annual fee |