CA2154192A1 - Speech coder - Google Patents

Speech coder

Info

Publication number: CA2154192A1
Authority: CA; Canada
Prior art keywords: delay; code; codes; speech; loop
Prior art date: 1994-07-19
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

CA002154192A

Other languages

English (en)

French (fr)

Inventor

Keiichi Funaki

Kazunori Ozawa

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

Individual

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.)

1994-07-19

Filing date

1995-07-19

Publication date

1996-01-20

1995-07-19 Application filed by Individual filed Critical Individual

1996-01-20 Publication of CA2154192A1 publication Critical patent/CA2154192A1/en

Status Abandoned legal-status Critical Current

Links

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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
- G10L19/04—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
- 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
- G10L2019/0001—Codebooks
- G10L2019/0003—Backward prediction of gain
- 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
- G10L2019/0001—Codebooks
- G10L2019/0011—Long term prediction filters, i.e. pitch estimation
- 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
- G10L2019/0001—Codebooks
- G10L2019/0013—Codebook search algorithms

Landscapes

Engineering & Computer Science (AREA)
Computational Linguistics (AREA)
Signal Processing (AREA)
Health & Medical Sciences (AREA)
Audiology, Speech & Language Pathology (AREA)
Human Computer Interaction (AREA)
Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Multimedia (AREA)
Compression, Expansion, Code Conversion, And Decoders (AREA)

CA002154192A 1994-07-19 1995-07-19 Speech coder Abandoned CA2154192A1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP6-187903		1994-07-19
JP6187903A JPH0830299A (ja)	1994-07-19	1994-07-19	音声符号化装置

Publications (1)

Publication Number	Publication Date
CA2154192A1 true CA2154192A1 (en)	1996-01-20

Family

ID=16214222

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA002154192A Abandoned CA2154192A1 (en)	1994-07-19	1995-07-19	Speech coder

Country Status (3)

Country	Link
EP (1)	EP0694907A3 (de)
JP (1)	JPH0830299A (de)
CA (1)	CA2154192A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH08292798A (ja) *	1995-04-24	1996-11-05	Nec Corp	音声再生制御方式
JP3343082B2 (ja)	1998-10-27	2002-11-11	松下電器産業株式会社	Ｃｅｌｐ型音声符号化装置
JP3594854B2 (ja)	1999-11-08	2004-12-02	三菱電機株式会社	音声符号化装置及び音声復号化装置
USRE43209E1 (en)	1999-11-08	2012-02-21	Mitsubishi Denki Kabushiki Kaisha	Speech coding apparatus and speech decoding apparatus
EP2099025A4 (de) *	2006-12-14	2010-12-22	Panasonic Corp	Audiocodierungseinrichtung und audiocodierungsverfahren
JP4525694B2 (ja) *	2007-03-27	2010-08-18	パナソニック株式会社	音声符号化装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1989002148A1 (en) *	1987-08-28	1989-03-09	British Telecommunications Public Limited Company	Coded communications system
US5097508A (en)	1989-08-31	1992-03-17	Codex Corporation	Digital speech coder having improved long term lag parameter determination
JP3254696B2 (ja) *	1991-09-25	2002-02-12	三菱電機株式会社	音声符号化装置、音声復号化装置および音源生成方法
US5495555A (en) *	1992-06-01	1996-02-27	Hughes Aircraft Company	High quality low bit rate celp-based speech codec

1994
- 1994-07-19 JP JP6187903A patent/JPH0830299A/ja active Pending
1995
- 1995-07-18 EP EP95111278A patent/EP0694907A3/de not_active Withdrawn
- 1995-07-19 CA CA002154192A patent/CA2154192A1/en not_active Abandoned

Also Published As

Publication number	Publication date
EP0694907A3 (de)	1997-10-15
EP0694907A2 (de)	1996-01-31
JPH0830299A (ja)	1996-02-02

Legal Events

Date	Code	Title	Description
1995-07-19	EEER	Examination request
1999-07-19	FZDE	Discontinued

Publication	Publication Date	Title
US6249758B1 (en)	2001-06-19	Apparatus and method for coding speech signals by making use of voice/unvoiced characteristics of the speech signals
CA2061830C (en)	1996-10-29	Speech coding system
WO1992006470A1 (en)	1992-04-16	A method of, and system for, coding analogue signals
US6101464A (en)	2000-08-08	Coding and decoding system for speech and musical sound
JP2019204097A (ja)	2019-11-28	音声符号化方法および関連装置
KR100198476B1 (ko)	1999-06-15	노이즈에 견고한 스펙트럼 포락선 양자화기 및 양자화 방법
KR100952065B1 (ko)	2010-04-13	부호화 방법 및 장치, 및 복호 방법 및 장치
CA1321025C (en)	1993-08-03	Speech signal coding/decoding system
JPH10240299A (ja)	1998-09-11	音声符号化及び復号装置
JPH08179797A (ja)	1996-07-12	音声符号化装置
CA2437314A1 (en)	2002-08-15	Conversion apparatus and conversion method of speech code sequence
Lahouti et al.	2003	Quantization of LSF parameters using a trellis modeling
EP0694907A2 (de)	1996-01-31	Sprachkodierer
EP0723257B1 (de)	2002-04-24	System zur Signalübertragung mittels spektraler Parameter und Vorrichtung zur Kodierung und Dekodierung von Sprachparametern dafür
JP3256215B2 (ja)	2002-02-12	音声符号化装置
CA2111290C (en)	1997-09-23	Robust vector quantization of line spectral frequencies
WO2008118834A1 (en)	2008-10-02	Multiple stream decoder
Yang et al.	2006	Cascaded trellis-based rate-distortion control algorithm for MPEG-4 advanced audio coding
KR960015861B1 (ko)	1996-11-22	선 스펙트럼 주파수 벡터의 양자화 방법 및 양자화기
JP3252285B2 (ja)	2002-02-04	音声帯域信号符号化方法
Yoon et al.	1997	Fixed point implementation of the QCELP speech coder
JP3194930B2 (ja)	2001-08-06	音声符号化装置
JPS6162100A (ja)	1986-03-29	マルチパルス型符号化復号化装置
Raina et al.	2014	Wireless speech coding: A systematic review
Andrews et al.	2000	Algorithm compatible improvements for FS-1016 CELP