JPS627741B2 - - Google Patents
Info
- Publication number
- JPS627741B2 JPS627741B2 JP56069814A JP6981481A JPS627741B2 JP S627741 B2 JPS627741 B2 JP S627741B2 JP 56069814 A JP56069814 A JP 56069814A JP 6981481 A JP6981481 A JP 6981481A JP S627741 B2 JPS627741 B2 JP S627741B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- noise
- circuit
- alternative
- input 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
- 238000001514 detection method Methods 0.000 claims abstract description 47
- 238000005311 autocorrelation function Methods 0.000 claims description 42
- 238000000034 method Methods 0.000 abstract description 30
- 238000005070 sampling Methods 0.000 abstract description 13
- 238000004364 calculation method Methods 0.000 description 44
- 238000012937 correction Methods 0.000 description 26
- 238000010586 diagram Methods 0.000 description 23
- 239000000523 sample Substances 0.000 description 15
- 230000003111 delayed effect Effects 0.000 description 13
- 230000001934 delay Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 238000005314 correlation function Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 101001106432 Homo sapiens Rod outer segment membrane protein 1 Proteins 0.000 description 1
- 102100021424 Rod outer segment membrane protein 1 Human genes 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000013074 reference sample Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000001960 triggered 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H21/00—Adaptive networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B14/00—Transmission systems not characterised by the medium used for transmission
- H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
- H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
- H04B14/046—Systems or methods for reducing noise or bandwidth
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Quality & Reliability (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Noise Elimination (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56069814A JPS57184331A (en) | 1981-05-09 | 1981-05-09 | Noise eliminating device |
| US06/373,437 US4587620A (en) | 1981-05-09 | 1982-04-30 | Noise elimination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56069814A JPS57184331A (en) | 1981-05-09 | 1981-05-09 | Noise eliminating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57184331A JPS57184331A (en) | 1982-11-13 |
| JPS627741B2 true JPS627741B2 (enrdf_load_stackoverflow) | 1987-02-19 |
Family
ID=13413599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56069814A Granted JPS57184331A (en) | 1981-05-09 | 1981-05-09 | Noise eliminating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57184331A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0393430A (ja) * | 1989-09-04 | 1991-04-18 | Matsushita Electric Ind Co Ltd | 蓄電池の充電制御装置 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6420731A (en) * | 1987-07-16 | 1989-01-24 | Fujitsu Ten Ltd | Mobile radio receiver |
| JPH04113723A (ja) * | 1990-09-04 | 1992-04-15 | Nec Corp | 誤り補正方式 |
-
1981
- 1981-05-09 JP JP56069814A patent/JPS57184331A/ja active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0393430A (ja) * | 1989-09-04 | 1991-04-18 | Matsushita Electric Ind Co Ltd | 蓄電池の充電制御装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57184331A (en) | 1982-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4587620A (en) | Noise elimination device | |
| KR0164590B1 (ko) | 음원 데이타 발생, 기록 또는 재생장치 | |
| US5673210A (en) | Signal restoration using left-sided and right-sided autoregressive parameters | |
| US7706550B2 (en) | Noise suppression apparatus and method | |
| JP2009104015A (ja) | 帯域拡張再生装置 | |
| JPH07326140A (ja) | 信号処理方法、信号処理装置、及び信号記録媒体 | |
| US5687240A (en) | Method and apparatus for processing discontinuities in digital sound signals caused by pitch control | |
| JPS627741B2 (enrdf_load_stackoverflow) | ||
| US20040246862A1 (en) | Method and apparatus for signal discrimination | |
| JP3076859B2 (ja) | ディジタルオーディオ信号の信号処理装置 | |
| JPH103297A (ja) | 背景雑音消去装置 | |
| Makhoul | Lattice methods in spectral estimation | |
| JP4769161B2 (ja) | エコーキャンセラ装置、その方法、そのプログラム、およびその記録媒体 | |
| JPS6225298B2 (enrdf_load_stackoverflow) | ||
| KR100474819B1 (ko) | 데이터기록/재생장치의신호검출방법및그장치 | |
| JP2000207000A (ja) | 信号処理装置および信号処理方法 | |
| JPS627742B2 (enrdf_load_stackoverflow) | ||
| JP5103606B2 (ja) | 信号処理装置 | |
| US7787975B2 (en) | Restoring audio signals | |
| JPH08102644A (ja) | 適応フィルタシステム | |
| JPH0248831A (ja) | 雑音低減方法 | |
| JPS6114551B2 (enrdf_load_stackoverflow) | ||
| JP4575226B2 (ja) | 適応等化器 | |
| JP4675179B2 (ja) | 遅延装置 | |
| JPH08329626A (ja) | ディジタルデータの補間装置、再生装置、記録装置及び補間方法 |