KR920019106A - 디지탈신호 부호화장치 - Google Patents
디지탈신호 부호화장치 Download PDFInfo
- Publication number
- KR920019106A KR920019106A KR1019920002727A KR920002727A KR920019106A KR 920019106 A KR920019106 A KR 920019106A KR 1019920002727 A KR1019920002727 A KR 1019920002727A KR 920002727 A KR920002727 A KR 920002727A KR 920019106 A KR920019106 A KR 920019106A
- Authority
- KR
- South Korea
- Prior art keywords
- digital signal
- signal coding
- coding device
- time axis
- transient
- Prior art date
Links
- 230000009466 transformation Effects 0.000 claims 2
- 230000001052 transient effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G7/00—Volume compression or expansion in amplifiers
- H03G7/007—Volume compression or expansion in amplifiers of digital or coded signals
-
- 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
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/032—Quantisation or dequantisation of spectral components
-
- 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
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/002—Dynamic bit allocation
-
- 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
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/0212—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using orthogonal transformation
-
- 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
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
- G10L19/025—Detection of transients or attacks for time/frequency resolution switching
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Computational Linguistics (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 일실시예인 디지탈신호 부호화장치의 개략 구성을 나타낸 블록회로도,
제2도는 본 발명의 실시예 장치에 있어서의 분할대역 및 각대역에서의 시간축 방향의 블록화의 구체예를 나타낸 도면,
제3도는 제5도 장치의 허용 잡음 산출회로의 구체예를 나타낸 블록회로도.
Claims (1)
- 입력 디지탈신호를 복수의 주파대역으로 분할하고, 분할된 각 대역마다 시간축 방향으로 블록화하여 각각 직교변환하고, 이들의 직교변환된 각각의 블록마다 부호화 비트수를 할당하여 부호화를 행하는 디지탈 신호부호화장치에 있어서, 상기 직교변환에 앞서서 시간축상의 신호의 과도성을 검출하고, 이 검출된 과도성에 따라 상기 각 블록마다의 할당비트수를 변경하는 것을 특징으로 하는 디지탈신호 부호화장치.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP91-092739 | 1991-03-30 | ||
JP03092739A JP3134338B2 (ja) | 1991-03-30 | 1991-03-30 | ディジタル音声信号符号化方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR920019106A true KR920019106A (ko) | 1992-10-22 |
KR100241498B1 KR100241498B1 (ko) | 2000-02-01 |
Family
ID=14062789
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920002727A KR100241498B1 (ko) | 1991-03-30 | 1992-02-22 | 디지털신호 부호화장치 |
Country Status (3)
Country | Link |
---|---|
US (1) | US5268685A (ko) |
JP (1) | JP3134338B2 (ko) |
KR (1) | KR100241498B1 (ko) |
Cited By (1)
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KR20160058884A (ko) * | 2013-10-23 | 2016-05-25 | 카이 자오 | 소형 수동 압력 커피포트 |
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JP3141450B2 (ja) * | 1991-09-30 | 2001-03-05 | ソニー株式会社 | オーディオ信号処理方法 |
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JPH0743598B2 (ja) * | 1992-06-25 | 1995-05-15 | 株式会社エイ・ティ・アール視聴覚機構研究所 | 音声認識方法 |
JP3186292B2 (ja) * | 1993-02-02 | 2001-07-11 | ソニー株式会社 | 高能率符号化方法及び装置 |
JP3186307B2 (ja) * | 1993-03-09 | 2001-07-11 | ソニー株式会社 | 圧縮データ記録装置及び方法 |
JP3123290B2 (ja) * | 1993-03-09 | 2001-01-09 | ソニー株式会社 | 圧縮データ記録装置及び方法、圧縮データ再生方法、記録媒体 |
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US5479447A (en) * | 1993-05-03 | 1995-12-26 | The Board Of Trustees Of The Leland Stanford, Junior University | Method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines |
US5581654A (en) * | 1993-05-25 | 1996-12-03 | Sony Corporation | Method and apparatus for information encoding and decoding |
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DE69428435T2 (de) * | 1993-11-04 | 2002-07-11 | Sony Corp., Tokio/Tokyo | Signalkodierer, signaldekodierer, aufzeichnungsträger und signalkodiererverfahren |
US5731767A (en) * | 1994-02-04 | 1998-03-24 | Sony Corporation | Information encoding method and apparatus, information decoding method and apparatus, information recording medium, and information transmission method |
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JP3186412B2 (ja) * | 1994-04-01 | 2001-07-11 | ソニー株式会社 | 情報符号化方法、情報復号化方法、及び情報伝送方法 |
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JP3277705B2 (ja) | 1994-07-27 | 2002-04-22 | ソニー株式会社 | 情報符号化装置及び方法、並びに情報復号化装置及び方法 |
JP3341474B2 (ja) * | 1994-07-28 | 2002-11-05 | ソニー株式会社 | 情報符号化方法及び復号化方法、情報符号化装置及び復号化装置、並びに情報記録媒体 |
JP3557674B2 (ja) * | 1994-12-15 | 2004-08-25 | ソニー株式会社 | 高能率符号化方法及び装置 |
JPH08190764A (ja) * | 1995-01-05 | 1996-07-23 | Sony Corp | ディジタル信号処理方法、ディジタル信号処理装置及び記録媒体 |
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JP3307138B2 (ja) * | 1995-02-27 | 2002-07-24 | ソニー株式会社 | 信号符号化方法及び装置、並びに信号復号化方法及び装置 |
JP2809126B2 (ja) * | 1995-03-30 | 1998-10-08 | 日本電気株式会社 | 音声信号処理回路および音声信号処理方法 |
JP3082625B2 (ja) * | 1995-07-15 | 2000-08-28 | 日本電気株式会社 | 音声信号処理回路 |
US5960390A (en) * | 1995-10-05 | 1999-09-28 | Sony Corporation | Coding method for using multi channel audio signals |
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US5115240A (en) * | 1989-09-26 | 1992-05-19 | Sony Corporation | Method and apparatus for encoding voice signals divided into a plurality of frequency bands |
JPH03117919A (ja) * | 1989-09-30 | 1991-05-20 | Sony Corp | ディジタル信号符号化装置 |
-
1991
- 1991-03-30 JP JP03092739A patent/JP3134338B2/ja not_active Expired - Lifetime
-
1992
- 1992-02-22 KR KR1019920002727A patent/KR100241498B1/ko not_active IP Right Cessation
- 1992-03-27 US US07/859,089 patent/US5268685A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20160058884A (ko) * | 2013-10-23 | 2016-05-25 | 카이 자오 | 소형 수동 압력 커피포트 |
Also Published As
Publication number | Publication date |
---|---|
JPH04304029A (ja) | 1992-10-27 |
US5268685A (en) | 1993-12-07 |
KR100241498B1 (ko) | 2000-02-01 |
JP3134338B2 (ja) | 2001-02-13 |
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