DE4012349C2 - - Google Patents
Info
- Publication number
- DE4012349C2 DE4012349C2 DE19904012349 DE4012349A DE4012349C2 DE 4012349 C2 DE4012349 C2 DE 4012349C2 DE 19904012349 DE19904012349 DE 19904012349 DE 4012349 A DE4012349 A DE 4012349A DE 4012349 C2 DE4012349 C2 DE 4012349C2
- Authority
- DE
- Germany
- Prior art keywords
- speech
- noise
- signal
- feature
- noise signals
- 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
- 230000008030 elimination Effects 0.000 claims description 6
- 238000003379 elimination reaction Methods 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 5
- 238000001228 spectrum Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 17
- 102000008482 12E7 Antigen Human genes 0.000 description 4
- 108010020567 12E7 Antigen Proteins 0.000 description 4
- 101000893549 Homo sapiens Growth/differentiation factor 15 Proteins 0.000 description 4
- 101000692878 Homo sapiens Regulator of MON1-CCZ1 complex Proteins 0.000 description 4
- 102100026436 Regulator of MON1-CCZ1 complex Human genes 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 3
- 238000004422 calculation algorithm Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition 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
- G10L15/00—Speech recognition
- G10L15/02—Feature extraction for speech recognition; Selection of recognition unit
-
- 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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/78—Detection of presence or absence of voice signals
- G10L2025/783—Detection of presence or absence of voice signals based on threshold decision
- G10L2025/786—Adaptive threshold
-
- 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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
- G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
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)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1101141A JP2859634B2 (ja) | 1989-04-19 | 1989-04-19 | 雑音除去装置 |
| JP1261099A JP2863214B2 (ja) | 1989-10-05 | 1989-10-05 | 雑音除去装置及び該装置を用いた音声認識装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE4012349A1 DE4012349A1 (de) | 1990-10-25 |
| DE4012349C2 true DE4012349C2 (enExample) | 1993-08-26 |
Family
ID=26442058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19904012349 Granted DE4012349A1 (de) | 1989-04-19 | 1990-04-18 | Einrichtung zum beseitigen von geraeuschen |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE4012349A1 (enExample) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2239971B (en) * | 1989-12-06 | 1993-09-29 | Ca Nat Research Council | System for separating speech from background noise |
| FR2681715B1 (fr) * | 1991-09-25 | 1994-02-11 | Matra Communication | Procede de traitement de la parole en presence de bruits acoustiques: procede de soustraction spectrale non lineaire . |
| US5400409A (en) * | 1992-12-23 | 1995-03-21 | Daimler-Benz Ag | Noise-reduction method for noise-affected voice channels |
| DE4307688A1 (de) * | 1993-03-11 | 1994-09-15 | Daimler Benz Ag | Verfahren zur Geräuschreduktion für gestörte Sprachkanäle |
| SE505156C2 (sv) * | 1995-01-30 | 1997-07-07 | Ericsson Telefon Ab L M | Förfarande för bullerundertryckning genom spektral subtraktion |
| AU724111B2 (en) * | 1995-09-14 | 2000-09-14 | Ericsson Inc. | System for adaptively filtering audio signals to enhance speech intelligibility in noisy environmental conditions |
| FR2768544B1 (fr) * | 1997-09-18 | 1999-11-19 | Matra Communication | Procede de detection d'activite vocale |
| CN113259801B (zh) * | 2021-05-08 | 2023-07-18 | 深圳市睿耳电子有限公司 | 一种智能耳机的喇叭降噪方法和相关装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1512758C1 (de) * | 1967-02-14 | 1977-09-15 | Sennheiser Electronic | Vocoder fuer hohe Stoerlautstaerken |
| DE3642591A1 (de) * | 1985-12-20 | 1987-11-12 | Bayerische Motoren Werke Ag | Verfahren zur spracherkennung in geraeuschvoller umgebung |
-
1990
- 1990-04-18 DE DE19904012349 patent/DE4012349A1/de active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE4012349A1 (de) | 1990-10-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition |