FR2773653B1 - Dispositifs de codage/decodage de donnees, et supports d'enregistrement memorisant un programme de codage/decodage de donnees au moyen d'un filtre de ponderation frequentielle - Google Patents

Dispositifs de codage/decodage de donnees, et supports d'enregistrement memorisant un programme de codage/decodage de donnees au moyen d'un filtre de ponderation frequentielle

Info

Publication number
FR2773653B1
FR2773653B1 FR9900029A FR9900029A FR2773653B1 FR 2773653 B1 FR2773653 B1 FR 2773653B1 FR 9900029 A FR9900029 A FR 9900029A FR 9900029 A FR9900029 A FR 9900029A FR 2773653 B1 FR2773653 B1 FR 2773653B1
Authority
FR
France
Prior art keywords
data encoding
decoding
frequential
recording media
media storing
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 - Fee Related
Application number
FR9900029A
Other languages
English (en)
Other versions
FR2773653A1 (fr
Inventor
Nobuyoshi Kaiki
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.)
Sharp Corp
Original Assignee
Sharp 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
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of FR2773653A1 publication Critical patent/FR2773653A1/fr
Application granted granted Critical
Publication of FR2773653B1 publication Critical patent/FR2773653B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/02—Synthesis of acoustic waves
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/0033—Recording/reproducing or transmission of music for electrophonic musical instruments
    • G10H1/0041—Recording/reproducing or transmission of music for electrophonic musical instruments in coded form
    • G10H1/0058—Transmission between separate instruments or between individual components of a musical system
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H3/00—Instruments in which the tones are generated by electromechanical means
    • G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
    • G10H3/125—Extracting or recognising the pitch or fundamental frequency of the picked up signal
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2240/00—Data organisation or data communication aspects, specifically adapted for electrophonic musical tools or instruments
    • G10H2240/011—Files or data streams containing coded musical information, e.g. for transmission
    • G10H2240/046—File format, i.e. specific or non-standard musical file format used in or adapted for electrophonic musical instruments, e.g. in wavetables
    • G10H2240/066—MPEG audio-visual compression file formats, e.g. MPEG-4 for coding of audio-visual objects
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2250/00—Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
    • G10H2250/131—Mathematical functions for musical analysis, processing, synthesis or composition
    • G10H2250/215—Transforms, i.e. mathematical transforms into domains appropriate for musical signal processing, coding or compression
    • G10H2250/235—Fourier transform; Discrete Fourier Transform [DFT]; Fast Fourier Transform [FFT]
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2250/00—Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
    • G10H2250/541—Details of musical waveform synthesis, i.e. audio waveshape processing from individual wavetable samples, independently of their origin or of the sound they represent
    • G10H2250/571—Waveform compression, adapted for music synthesisers, sound banks or wavetables
    • G10H2250/575—Adaptive MDCT-based compression, e.g. using a hybrid subband-MDCT, as in ATRAC

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
FR9900029A 1998-01-05 1999-01-05 Dispositifs de codage/decodage de donnees, et supports d'enregistrement memorisant un programme de codage/decodage de donnees au moyen d'un filtre de ponderation frequentielle Expired - Fee Related FR2773653B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP00051798A JP3504485B2 (ja) 1998-01-05 1998-01-05 楽音符号化装置および楽音復号化装置および楽音符号化復号化装置およびプログラム記憶媒体

Publications (2)

Publication Number Publication Date
FR2773653A1 FR2773653A1 (fr) 1999-07-16
FR2773653B1 true FR2773653B1 (fr) 2001-05-25

Family

ID=11475974

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9900029A Expired - Fee Related FR2773653B1 (fr) 1998-01-05 1999-01-05 Dispositifs de codage/decodage de donnees, et supports d'enregistrement memorisant un programme de codage/decodage de donnees au moyen d'un filtre de ponderation frequentielle

Country Status (2)

Country Link
JP (1) JP3504485B2 (fr)
FR (1) FR2773653B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100571824B1 (ko) 2003-11-26 2006-04-17 삼성전자주식회사 부가정보 삽입된 ｍｐｅｇ-4 오디오 ｂｓａｃ부호화/복호화 방법 및 장치

Also Published As

Publication number Publication date
JPH11194799A (ja) 1999-07-21
FR2773653A1 (fr) 1999-07-16
JP3504485B2 (ja) 2004-03-08

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Effective date: 20100930