GB2350763B - Voice signal coding apparatus - Google Patents

Voice signal coding apparatus

Info

Publication number
GB2350763B
GB2350763B GB0023246A GB0023246A GB2350763B GB 2350763 B GB2350763 B GB 2350763B GB 0023246 A GB0023246 A GB 0023246A GB 0023246 A GB0023246 A GB 0023246A GB 2350763 B GB2350763 B GB 2350763B
Authority
GB
United Kingdom
Prior art keywords
voice signal
coding apparatus
signal coding
voice
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 - Fee Related
Application number
GB0023246A
Other versions
GB2350763A (en
GB0023246D0 (en
Inventor
Hidetaka Takahashi
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.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
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 JP8091178A external-priority patent/JPH09281997A/en
Priority claimed from JP09117796A external-priority patent/JP3607774B2/en
Priority claimed from JP09276896A external-priority patent/JP3607775B2/en
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority claimed from GB9707087A external-priority patent/GB2312360B/en
Publication of GB0023246D0 publication Critical patent/GB0023246D0/en
Publication of GB2350763A publication Critical patent/GB2350763A/en
Application granted granted Critical
Publication of GB2350763B publication Critical patent/GB2350763B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G10L19/012—Comfort noise or silence coding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/004—Predictors, e.g. intraframe, interframe coding
    • 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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • 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
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
GB0023246A 1996-04-12 1997-04-08 Voice signal coding apparatus Expired - Fee Related GB2350763B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP8091178A JPH09281997A (en) 1996-04-12 1996-04-12 Voice coding device
JP09117796A JP3607774B2 (en) 1996-04-12 1996-04-12 Speech encoding device
JP09276896A JP3607775B2 (en) 1996-04-15 1996-04-15 Voice state discrimination device
GB9707087A GB2312360B (en) 1996-04-12 1997-04-08 Voice signal coding apparatus

Publications (3)

Publication Number Publication Date
GB0023246D0 GB0023246D0 (en) 2000-11-01
GB2350763A GB2350763A (en) 2000-12-06
GB2350763B true GB2350763B (en) 2001-01-24

Family

ID=27451628

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0023247A Expired - Fee Related GB2351211B (en) 1996-04-12 1997-04-08 Voice signal coding apparatus
GB0023246A Expired - Fee Related GB2350763B (en) 1996-04-12 1997-04-08 Voice signal coding apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0023247A Expired - Fee Related GB2351211B (en) 1996-04-12 1997-04-08 Voice signal coding apparatus

Country Status (1)

Country Link
GB (2) GB2351211B (en)

Also Published As

Publication number Publication date
GB2350763A (en) 2000-12-06
GB0023247D0 (en) 2000-11-01
GB0023246D0 (en) 2000-11-01
GB2351211B (en) 2001-02-07
GB2351211A (en) 2000-12-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20150408