DE3230391C2 - - Google Patents
Info
- Publication number
- DE3230391C2 DE3230391C2 DE19823230391 DE3230391A DE3230391C2 DE 3230391 C2 DE3230391 C2 DE 3230391C2 DE 19823230391 DE19823230391 DE 19823230391 DE 3230391 A DE3230391 A DE 3230391A DE 3230391 C2 DE3230391 C2 DE 3230391C2
- Authority
- DE
- Germany
- Prior art keywords
- coefficients
- channel
- coefficient
- signal
- value
- 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 - Lifetime
Links
- 230000003595 spectral effect Effects 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 33
- 230000036961 partial effect Effects 0.000 claims description 33
- 230000003044 adaptive effect Effects 0.000 claims description 20
- 230000006872 improvement Effects 0.000 claims description 7
- 230000007774 longterm Effects 0.000 claims description 6
- 230000002123 temporal effect Effects 0.000 claims description 5
- 238000009499 grossing Methods 0.000 claims description 3
- 230000036962 time dependent Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 description 11
- 230000009467 reduction Effects 0.000 description 11
- 238000001228 spectrum Methods 0.000 description 11
- 238000004458 analytical method Methods 0.000 description 9
- 230000009466 transformation Effects 0.000 description 7
- 238000001914 filtration Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 238000012935 Averaging Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000010183 spectrum analysis Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 108010076504 Protein Sorting Signals Proteins 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008094 contradictory 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
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012074 hearing test Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000013179 statistical model Methods 0.000 description 1
- 238000011410 subtraction method Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L21/0232—Processing in the frequency domain
Landscapes
- Engineering & Computer Science (AREA)
- Computational Linguistics (AREA)
- Quality & Reliability (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Noise Elimination (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823230391 DE3230391A1 (de) | 1982-08-14 | 1982-08-14 | Verfahren zur signalverbesserung von gestoerten sprachsignalen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823230391 DE3230391A1 (de) | 1982-08-14 | 1982-08-14 | Verfahren zur signalverbesserung von gestoerten sprachsignalen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3230391A1 DE3230391A1 (de) | 1984-02-16 |
| DE3230391C2 true DE3230391C2 (US07179912-20070220-C00144.png) | 1991-01-10 |
Family
ID=6170963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19823230391 Granted DE3230391A1 (de) | 1982-08-14 | 1982-08-14 | Verfahren zur signalverbesserung von gestoerten sprachsignalen |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3230391A1 (US07179912-20070220-C00144.png) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19524847C1 (de) * | 1995-07-07 | 1997-02-13 | Siemens Ag | Vorrichtung zur Verbesserung gestörter Sprachsignale |
| DE19854341A1 (de) * | 1998-11-25 | 2000-06-08 | Alcatel Sa | Verfahren und Schaltungsanordnung zur Sprachpegelmessung in einem Sprachsignalverarbeitungssystem |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3802903A1 (de) * | 1988-02-01 | 1989-08-10 | Siemens Ag | Einrichtung zur uebertragung von sprache |
| FI100840B (fi) * | 1995-12-12 | 1998-02-27 | Nokia Mobile Phones Ltd | Kohinanvaimennin ja menetelmä taustakohinan vaimentamiseksi kohinaises ta puheesta sekä matkaviestin |
| DE19818609C2 (de) * | 1998-04-20 | 2000-06-15 | Deutsche Telekom Ag | Verfahren und Vorrichtung zur Geräuschfilterung |
| EP1428354A2 (en) * | 2001-09-20 | 2004-06-16 | Honeywell International, Inc. | Digital audio system |
| CN112017683B (zh) * | 2020-10-20 | 2021-01-05 | 南京南大电子智慧型服务机器人研究院有限公司 | 一种频域无次级路径有源噪声控制系统 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3421141A (en) * | 1967-10-16 | 1969-01-07 | Huntec Ltd | Self-adjusting filter |
| CH522327A (de) * | 1970-09-28 | 1972-06-15 | Bbc Brown Boveri & Cie | Elektrische Filterschaltung |
| DE3118473C2 (de) * | 1981-05-09 | 1987-02-05 | Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | Verfahren zur Aufbereitung elektrischer Signale mit einer digitalen Filteranordnung |
-
1982
- 1982-08-14 DE DE19823230391 patent/DE3230391A1/de active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19524847C1 (de) * | 1995-07-07 | 1997-02-13 | Siemens Ag | Vorrichtung zur Verbesserung gestörter Sprachsignale |
| DE19854341A1 (de) * | 1998-11-25 | 2000-06-08 | Alcatel Sa | Verfahren und Schaltungsanordnung zur Sprachpegelmessung in einem Sprachsignalverarbeitungssystem |
| US6539350B1 (en) | 1998-11-25 | 2003-03-25 | Alcatel | Method and circuit arrangement for speech level measurement in a speech signal processing system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3230391A1 (de) | 1984-02-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8125 | Change of the main classification |
Ipc: H03H 17/02 |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: PHILIPS PATENTVERWALTUNG GMBH, 20097 HAMBURG, DE |
|
| 8339 | Ceased/non-payment of the annual fee |