GB2338630B - Speech decoder and method of operation - Google Patents

Speech decoder and method of operation

Info

Publication number
GB2338630B
GB2338630B GB9813255A GB9813255A GB2338630B GB 2338630 B GB2338630 B GB 2338630B GB 9813255 A GB9813255 A GB 9813255A GB 9813255 A GB9813255 A GB 9813255A GB 2338630 B GB2338630 B GB 2338630B
Authority
GB
United Kingdom
Prior art keywords
speech decoder
speech
decoder
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
GB9813255A
Other versions
GB2338630A (en
GB9813255D0 (en
Inventor
Dominic Sai Fan Chan
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.)
Motorola Solutions UK Ltd
Original Assignee
Motorola 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
Application filed by Motorola Ltd filed Critical Motorola Ltd
Priority to GB9813255A priority Critical patent/GB2338630B/en
Publication of GB9813255D0 publication Critical patent/GB9813255D0/en
Publication of GB2338630A publication Critical patent/GB2338630A/en
Application granted granted Critical
Publication of GB2338630B publication Critical patent/GB2338630B/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
    • G10L19/04—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
    • G10L19/26—Pre-filtering or post-filtering
    • 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
GB9813255A 1998-06-20 1998-06-20 Speech decoder and method of operation Expired - Fee Related GB2338630B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9813255A GB2338630B (en) 1998-06-20 1998-06-20 Speech decoder and method of operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9813255A GB2338630B (en) 1998-06-20 1998-06-20 Speech decoder and method of operation

Publications (3)

Publication Number Publication Date
GB9813255D0 GB9813255D0 (en) 1998-08-19
GB2338630A GB2338630A (en) 1999-12-22
GB2338630B true GB2338630B (en) 2000-07-26

Family

ID=10834042

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9813255A Expired - Fee Related GB2338630B (en) 1998-06-20 1998-06-20 Speech decoder and method of operation

Country Status (1)

Country Link
GB (1) GB2338630B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0462559A2 (en) * 1990-06-18 1991-12-27 Fujitsu Limited Speech coding and decoding system
EP0532225A2 (en) * 1991-09-10 1993-03-17 AT&T Corp. Method and apparatus for speech coding and decoding
EP0657872A2 (en) * 1993-12-10 1995-06-14 Nec Corporation Spech decoder capable of reproducing well background noise
EP0658875A2 (en) * 1993-12-10 1995-06-21 Nec Corporation Speech decoder
WO1998006091A1 (en) * 1996-08-02 1998-02-12 Matsushita Electric Industrial Co., Ltd. Voice encoder, voice decoder, recording medium on which program for realizing voice encoding/decoding is recorded and mobile communication apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0462559A2 (en) * 1990-06-18 1991-12-27 Fujitsu Limited Speech coding and decoding system
EP0532225A2 (en) * 1991-09-10 1993-03-17 AT&T Corp. Method and apparatus for speech coding and decoding
EP0657872A2 (en) * 1993-12-10 1995-06-14 Nec Corporation Spech decoder capable of reproducing well background noise
EP0658875A2 (en) * 1993-12-10 1995-06-21 Nec Corporation Speech decoder
WO1998006091A1 (en) * 1996-08-02 1998-02-12 Matsushita Electric Industrial Co., Ltd. Voice encoder, voice decoder, recording medium on which program for realizing voice encoding/decoding is recorded and mobile communication apparatus

Also Published As

Publication number Publication date
GB2338630A (en) 1999-12-22
GB9813255D0 (en) 1998-08-19

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Legal Events

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

Effective date: 20090620