DE69028176T2 - Adaptive Transformationskodierung durch optimale Blocklängenselektion in Abhängigkeit von Unterschieden zwischen aufeinanderfolgenden Blöcken - Google Patents

Adaptive Transformationskodierung durch optimale Blocklängenselektion in Abhängigkeit von Unterschieden zwischen aufeinanderfolgenden Blöcken

Info

Publication number
DE69028176T2
DE69028176T2 DE69028176T DE69028176T DE69028176T2 DE 69028176 T2 DE69028176 T2 DE 69028176T2 DE 69028176 T DE69028176 T DE 69028176T DE 69028176 T DE69028176 T DE 69028176T DE 69028176 T2 DE69028176 T2 DE 69028176T2
Authority
DE
Germany
Prior art keywords
differences
block length
successive blocks
length selection
selection depending
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
Application number
DE69028176T
Other languages
English (en)
Other versions
DE69028176D1 (de
Inventor
Akihiko Sugiyama
Masahiro Iwadare
Takao Nishitani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP1297010A external-priority patent/JP2569842B2/ja
Priority claimed from JP1312333A external-priority patent/JP2778161B2/ja
Priority claimed from JP1324334A external-priority patent/JP2778166B2/ja
Priority claimed from JP1324335A external-priority patent/JP2569850B2/ja
Priority claimed from JP1324333A external-priority patent/JP2569849B2/ja
Application filed by NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE69028176D1 publication Critical patent/DE69028176D1/de
Publication of DE69028176T2 publication Critical patent/DE69028176T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • 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
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3053—Block-companding PCM systems
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
DE69028176T 1989-11-14 1990-11-14 Adaptive Transformationskodierung durch optimale Blocklängenselektion in Abhängigkeit von Unterschieden zwischen aufeinanderfolgenden Blöcken Expired - Lifetime DE69028176T2 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP1297010A JP2569842B2 (ja) 1989-11-14 1989-11-14 適応変換符号化の方法及び装置
JP1312333A JP2778161B2 (ja) 1989-11-30 1989-11-30 適応変換符号化の方法及び装置
JP1324334A JP2778166B2 (ja) 1989-12-13 1989-12-13 適応変換符号化の方法及び装置
JP1324335A JP2569850B2 (ja) 1989-12-13 1989-12-13 適応変換符号化の方法及び装置
JP1324333A JP2569849B2 (ja) 1989-12-13 1989-12-13 適応変換符号化の方法及び装置

Publications (2)

Publication Number Publication Date
DE69028176D1 DE69028176D1 (de) 1996-09-26
DE69028176T2 true DE69028176T2 (de) 1997-01-23

Family

ID=27530887

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69028176T Expired - Lifetime DE69028176T2 (de) 1989-11-14 1990-11-14 Adaptive Transformationskodierung durch optimale Blocklängenselektion in Abhängigkeit von Unterschieden zwischen aufeinanderfolgenden Blöcken

Country Status (3)

Country Link
US (1) US5235623A (de)
EP (1) EP0428156B1 (de)
DE (1) DE69028176T2 (de)

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JP3173218B2 (ja) * 1993-05-10 2001-06-04 ソニー株式会社 圧縮データ記録方法及び装置、圧縮データ再生方法、並びに記録媒体
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KR100368854B1 (ko) * 1993-06-30 2003-05-17 소니 가부시끼 가이샤 디지털신호의부호화장치,그의복호화장치및기록매체
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JP3250376B2 (ja) * 1994-06-13 2002-01-28 ソニー株式会社 情報符号化方法及び装置並びに情報復号化方法及び装置
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
KR0139161B1 (ko) * 1994-11-26 1998-05-15 김광호 가변장부호테이블의 심볼-부호어 재배정을 이용한 가변장 부호화/복호화 장치
JP3371590B2 (ja) * 1994-12-28 2003-01-27 ソニー株式会社 高能率符号化方法及び高能率復号化方法
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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
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US5825320A (en) * 1996-03-19 1998-10-20 Sony Corporation Gain control method for audio encoding device
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JP2002050996A (ja) * 2000-07-31 2002-02-15 Sony Corp 整数倍相互関係を有するブロック長を用いて符号化された信号を通信伝送路を介して送信する通信システム
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KR100668319B1 (ko) * 2004-12-07 2007-01-12 삼성전자주식회사 오디오 신호의 변환방법 및 장치와 오디오 신호에적응적인 부호화방법 및 장치, 오디오 신호의 역변환 방법및 장치와 오디오 신호에 적응적인 복호화 방법 및 장치
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JP4896839B2 (ja) * 2007-08-31 2012-03-14 ルネサスエレクトロニクス株式会社 マイクロプロセッサおよびデータ処理方法
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US9210442B2 (en) 2011-01-12 2015-12-08 Google Technology Holdings LLC Efficient transform unit representation
US9380319B2 (en) 2011-02-04 2016-06-28 Google Technology Holdings LLC Implicit transform unit representation
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Also Published As

Publication number Publication date
EP0428156B1 (de) 1996-08-21
EP0428156A3 (en) 1991-11-06
US5235623A (en) 1993-08-10
EP0428156A2 (de) 1991-05-22
DE69028176D1 (de) 1996-09-26

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