JPH0126598B2 - - Google Patents
Info
- Publication number
- JPH0126598B2 JPH0126598B2 JP57182355A JP18235582A JPH0126598B2 JP H0126598 B2 JPH0126598 B2 JP H0126598B2 JP 57182355 A JP57182355 A JP 57182355A JP 18235582 A JP18235582 A JP 18235582A JP H0126598 B2 JPH0126598 B2 JP H0126598B2
- Authority
- JP
- Japan
- Prior art keywords
- target signal
- noise
- signals
- delay
- signal
- 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.)
- Expired
Links
- 238000011156 evaluation Methods 0.000 claims description 7
- 230000003111 delayed effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 34
- 230000035945 sensitivity Effects 0.000 description 22
- 238000010586 diagram Methods 0.000 description 17
- 239000011159 matrix material Substances 0.000 description 10
- 238000001514 detection method Methods 0.000 description 8
- 238000001228 spectrum Methods 0.000 description 7
- 238000005314 correlation function Methods 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 238000005457 optimization Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012887 quadratic function Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000002945 steepest descent method Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
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)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57182355A JPS5972295A (ja) | 1982-10-18 | 1982-10-18 | 多点受音装置 |
| US06/539,891 US4536887A (en) | 1982-10-18 | 1983-10-07 | Microphone-array apparatus and method for extracting desired signal |
| CA000439141A CA1208758A (en) | 1982-10-18 | 1983-10-17 | Microphone array apparatus and method for extracting desired signal |
| NLAANVRAGE8303589,A NL190568C (nl) | 1982-10-18 | 1983-10-18 | Microfoonconfiguratie. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57182355A JPS5972295A (ja) | 1982-10-18 | 1982-10-18 | 多点受音装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5972295A JPS5972295A (ja) | 1984-04-24 |
| JPH0126598B2 true JPH0126598B2 (ko) | 1989-05-24 |
Family
ID=16116859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57182355A Granted JPS5972295A (ja) | 1982-10-18 | 1982-10-18 | 多点受音装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5972295A (ko) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6457899A (en) * | 1987-08-28 | 1989-03-06 | Central Res Inst Elect | Microphone and speaker |
| JP5034607B2 (ja) * | 2006-11-02 | 2012-09-26 | 株式会社日立製作所 | 音響エコーキャンセラシステム |
| US8526632B2 (en) | 2007-06-28 | 2013-09-03 | Microsoft Corporation | Microphone array for a camera speakerphone |
| US8330787B2 (en) | 2007-06-29 | 2012-12-11 | Microsoft Corporation | Capture device movement compensation for speaker indexing |
| US8165416B2 (en) | 2007-06-29 | 2012-04-24 | Microsoft Corporation | Automatic gain and exposure control using region of interest detection |
| WO2011004503A1 (ja) * | 2009-07-08 | 2011-01-13 | 株式会社日立製作所 | 雑音除去装置及び雑音除去方法 |
| ES2670870T3 (es) * | 2010-12-21 | 2018-06-01 | Nippon Telegraph And Telephone Corporation | Método de realce de sonido, dispositivo, programa y medio de grabación |
| US10951859B2 (en) | 2018-05-30 | 2021-03-16 | Microsoft Technology Licensing, Llc | Videoconferencing device and method |
-
1982
- 1982-10-18 JP JP57182355A patent/JPS5972295A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5972295A (ja) | 1984-04-24 |
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