CA2467466A1 - Systeme et methode de compression et de reconstitution des fichiers sonores - Google Patents

Systeme et methode de compression et de reconstitution des fichiers sonores Download PDF

Info

Publication number
CA2467466A1
CA2467466A1 CA 2467466 CA2467466A CA2467466A1 CA 2467466 A1 CA2467466 A1 CA 2467466A1 CA 2467466 CA2467466 CA 2467466 CA 2467466 A CA2467466 A CA 2467466A CA 2467466 A1 CA2467466 A1 CA 2467466A1
Authority
CA
Canada
Prior art keywords
compression
frequency
value
audio signal
mdct
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.)
Abandoned
Application number
CA 2467466
Other languages
English (en)
Inventor
Dmitry Vatolin
Alexey Lukin
Victor Tyakht
Alexey Martynov
Alexey Oraevsky
Stewart Ian Campbell
Stephen Charles Beckman
Eugene Shelwien
Original Assignee
REAUD TECHNOLOGIES, INC.
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
Application filed by REAUD TECHNOLOGIES, INC. filed Critical REAUD TECHNOLOGIES, INC.
Priority to CA 2467466 priority Critical patent/CA2467466A1/fr
Publication of CA2467466A1 publication Critical patent/CA2467466A1/fr
Abandoned legal-status Critical Current

Links

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
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/4006—Conversion to or from arithmetic code
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/0204—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 subband decomposition
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/04—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 predictive techniques
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00007—Time or data compression or expansion
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00007—Time or data compression or expansion
    • G11B2020/00014—Time or data compression or expansion the compressed signal being an audio signal
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10546—Audio or video recording specifically adapted for audio data
CA 2467466 2004-05-17 2004-05-17 Systeme et methode de compression et de reconstitution des fichiers sonores Abandoned CA2467466A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2467466 CA2467466A1 (fr) 2004-05-17 2004-05-17 Systeme et methode de compression et de reconstitution des fichiers sonores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2467466 CA2467466A1 (fr) 2004-05-17 2004-05-17 Systeme et methode de compression et de reconstitution des fichiers sonores

Publications (1)

Publication Number Publication Date
CA2467466A1 true CA2467466A1 (fr) 2005-11-17

Family

ID=35452167

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2467466 Abandoned CA2467466A1 (fr) 2004-05-17 2004-05-17 Systeme et methode de compression et de reconstitution des fichiers sonores

Country Status (1)

Country Link
CA (1) CA2467466A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113362864A (zh) * 2021-06-16 2021-09-07 北京字节跳动网络技术有限公司 音频信号处理的方法、装置、存储介质及电子设备

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113362864A (zh) * 2021-06-16 2021-09-07 北京字节跳动网络技术有限公司 音频信号处理的方法、装置、存储介质及电子设备

Similar Documents

Publication Publication Date Title
US20080243518A1 (en) System And Method For Compressing And Reconstructing Audio Files
JP2904472B2 (ja) ディジタル・オーディオ信号を効率的に圧縮するための方法、データ処理システムおよび装置
US6253165B1 (en) System and method for modeling probability distribution functions of transform coefficients of encoded signal
US6182034B1 (en) System and method for producing a fixed effort quantization step size with a binary search
US8050933B2 (en) Audio coding system using temporal shape of a decoded signal to adapt synthesized spectral components
TWI515720B (zh) 壓縮數位化音訊信號之方法、解碼已編碼壓縮數位化音訊信號之方法、及機器可讀儲存媒體
EP1080579B1 (fr) Codeur et decodeur audio a echelles multiples
EP0884850A2 (fr) Méthode pour comprimer un codage et un décodage audio
WO1997014138A1 (fr) Compression de donnees basee sur des ondelettes
TWI288915B (en) Improved audio coding system using characteristics of a decoded signal to adapt synthesized spectral components
US8149927B2 (en) Method of and apparatus for encoding/decoding digital signal using linear quantization by sections
JPH0846518A (ja) 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
JP3353868B2 (ja) 音響信号変換符号化方法および復号化方法
KR20020077959A (ko) 디지탈 오디오 부호화기 및 복호화 방법
CA2467466A1 (fr) Systeme et methode de compression et de reconstitution des fichiers sonores
JP3361790B2 (ja) オーディオ信号符号化方法、オーディオ信号復号化方法およびオーディオ信号符号化／復号化装置と前記方法を実施するプログラムを記録した記録媒体
Gunjal et al. Traditional Psychoacoustic Model and Daubechies Wavelets for Enhanced Speech Coder Performance
JP3200886B2 (ja) オーディオ信号処理方法
JP3141853B2 (ja) オーディオ信号処理方法
JP3099569B2 (ja) 音響信号の伝送方法
Mason et al. Digital coding of covert audio for monitoring and storage
Ning Analysis and coding of high quality audio signals

Legal Events

Date Code Title Description
FZDE Dead