DE69223335T2 - Sprachkodiersystem - Google Patents
SprachkodiersystemInfo
- Publication number
- DE69223335T2 DE69223335T2 DE69223335T DE69223335T DE69223335T2 DE 69223335 T2 DE69223335 T2 DE 69223335T2 DE 69223335 T DE69223335 T DE 69223335T DE 69223335 T DE69223335 T DE 69223335T DE 69223335 T2 DE69223335 T2 DE 69223335T2
- Authority
- DE
- Germany
- Prior art keywords
- delay
- search
- fractional
- found
- candidates
- 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 - Lifetime
Links
- 230000003044 adaptive effect Effects 0.000 abstract 3
- 230000001934 delay Effects 0.000 abstract 2
- 230000005284 excitation Effects 0.000 abstract 2
- 238000001914 filtration Methods 0.000 abstract 1
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
- G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
-
- 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
-
- 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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/06—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being correlation coefficients
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10326291A JP3254687B2 (ja) | 1991-02-26 | 1991-02-26 | 音声符号化方式 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69223335D1 DE69223335D1 (de) | 1998-01-15 |
DE69223335T2 true DE69223335T2 (de) | 1998-03-26 |
Family
ID=14349524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69223335T Expired - Lifetime DE69223335T2 (de) | 1991-02-26 | 1992-02-25 | Sprachkodiersystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US5426718A (de) |
EP (1) | EP0501421B1 (de) |
JP (1) | JP3254687B2 (de) |
CA (1) | CA2061830C (de) |
DE (1) | DE69223335T2 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2746039B2 (ja) * | 1993-01-22 | 1998-04-28 | 日本電気株式会社 | 音声符号化方式 |
JP2800618B2 (ja) * | 1993-02-09 | 1998-09-21 | 日本電気株式会社 | 音声パラメータ符号化方式 |
JP2658816B2 (ja) * | 1993-08-26 | 1997-09-30 | 日本電気株式会社 | 音声のピッチ符号化装置 |
JP2655046B2 (ja) * | 1993-09-13 | 1997-09-17 | 日本電気株式会社 | ベクトル量子化装置 |
JP3087591B2 (ja) * | 1994-12-27 | 2000-09-11 | 日本電気株式会社 | 音声符号化装置 |
JPH08292797A (ja) * | 1995-04-20 | 1996-11-05 | Nec Corp | 音声符号化装置 |
JP3308764B2 (ja) * | 1995-05-31 | 2002-07-29 | 日本電気株式会社 | 音声符号化装置 |
US5704003A (en) * | 1995-09-19 | 1997-12-30 | Lucent Technologies Inc. | RCELP coder |
JP3970327B2 (ja) * | 1996-02-15 | 2007-09-05 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴイ | 複雑さが軽減された信号送信システム |
TW317051B (de) * | 1996-02-15 | 1997-10-01 | Philips Electronics Nv | |
US5799271A (en) * | 1996-06-24 | 1998-08-25 | Electronics And Telecommunications Research Institute | Method for reducing pitch search time for vocoder |
KR100366700B1 (ko) * | 1996-10-31 | 2003-02-19 | 삼성전자 주식회사 | 코드여기 선형 예측 부호화에 있어서 상관함수에 기초한 적응 코드북 탐색방법 |
JP3180786B2 (ja) * | 1998-11-27 | 2001-06-25 | 日本電気株式会社 | 音声符号化方法及び音声符号化装置 |
SE9903223L (sv) * | 1999-09-09 | 2001-05-08 | Ericsson Telefon Ab L M | Förfarande och anordning i telekommunikationssystem |
TW564400B (en) * | 2001-12-25 | 2003-12-01 | Univ Nat Cheng Kung | Speech coding/decoding method and speech coder/decoder |
GB2466671B (en) | 2009-01-06 | 2013-03-27 | Skype | Speech encoding |
GB2466673B (en) | 2009-01-06 | 2012-11-07 | Skype | Quantization |
GB2466675B (en) | 2009-01-06 | 2013-03-06 | Skype | Speech coding |
GB2466672B (en) | 2009-01-06 | 2013-03-13 | Skype | Speech coding |
GB2466669B (en) | 2009-01-06 | 2013-03-06 | Skype | Speech coding |
GB2466670B (en) | 2009-01-06 | 2012-11-14 | Skype | Speech encoding |
GB2466674B (en) * | 2009-01-06 | 2013-11-13 | Skype | Speech coding |
US8452606B2 (en) | 2009-09-29 | 2013-05-28 | Skype | Speech encoding using multiple bit rates |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4184049A (en) * | 1978-08-25 | 1980-01-15 | Bell Telephone Laboratories, Incorporated | Transform speech signal coding with pitch controlled adaptive quantizing |
US4441201A (en) * | 1980-02-04 | 1984-04-03 | Texas Instruments Incorporated | Speech synthesis system utilizing variable frame rate |
NL8302985A (nl) * | 1983-08-26 | 1985-03-18 | Philips Nv | Multipulse excitatie lineair predictieve spraakcodeerder. |
NL8500843A (nl) * | 1985-03-22 | 1986-10-16 | Koninkl Philips Electronics Nv | Multipuls-excitatie lineair-predictieve spraakcoder. |
DE3871369D1 (de) * | 1988-03-08 | 1992-06-25 | Ibm | Verfahren und einrichtung zur sprachkodierung mit niedriger datenrate. |
GB8806185D0 (en) * | 1988-03-16 | 1988-04-13 | Univ Surrey | Speech coding |
US4964166A (en) * | 1988-05-26 | 1990-10-16 | Pacific Communication Science, Inc. | Adaptive transform coder having minimal bit allocation processing |
DE68916944T2 (de) * | 1989-04-11 | 1995-03-16 | Ibm | Verfahren zur schnellen Bestimmung der Grundfrequenz in Sprachcodierern mit langfristiger Prädiktion. |
US4975956A (en) * | 1989-07-26 | 1990-12-04 | Itt Corporation | Low-bit-rate speech coder using LPC data reduction processing |
US5097508A (en) * | 1989-08-31 | 1992-03-17 | Codex Corporation | Digital speech coder having improved long term lag parameter determination |
US5138661A (en) * | 1990-11-13 | 1992-08-11 | General Electric Company | Linear predictive codeword excited speech synthesizer |
-
1991
- 1991-02-26 JP JP10326291A patent/JP3254687B2/ja not_active Expired - Lifetime
-
1992
- 1992-02-25 DE DE69223335T patent/DE69223335T2/de not_active Expired - Lifetime
- 1992-02-25 CA CA002061830A patent/CA2061830C/en not_active Expired - Lifetime
- 1992-02-25 EP EP92103181A patent/EP0501421B1/de not_active Expired - Lifetime
- 1992-02-26 US US07/842,040 patent/US5426718A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP3254687B2 (ja) | 2002-02-12 |
JPH04270398A (ja) | 1992-09-25 |
US5426718A (en) | 1995-06-20 |
CA2061830C (en) | 1996-10-29 |
EP0501421A3 (en) | 1993-03-31 |
CA2061830A1 (en) | 1992-08-27 |
DE69223335D1 (de) | 1998-01-15 |
EP0501421A2 (de) | 1992-09-02 |
EP0501421B1 (de) | 1997-12-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69223335D1 (de) | Sprachkodiersystem | |
DE69232892D1 (de) | Sprachkodierungssystem | |
ATE80489T1 (de) | Linearer praediktionsvocoder mit code-anregung. | |
AU1838488A (en) | Code excited linear predictive vocoder and method of operation | |
DE69529672D1 (de) | System zur sprachkodierung | |
FI980502A0 (fi) | Talkodning | |
CA2103785A1 (en) | Speech coder and method having spectral interpolation and fast codebook search | |
FI934424A0 (fi) | Tid-frekvens -interpolering med tillaempning pao laoghastighets talkodning | |
US5598504A (en) | Speech coding system to reduce distortion through signal overlap | |
ATE456127T1 (de) | Celp sprachkodierer | |
EP0462559A3 (en) | Speech coding and decoding system | |
EP0462558A3 (en) | Speech coding system | |
DK154653C (da) | Fremgangsmaade til fremstilling af pentapeptidet h-arg-x-z-y-tyr-r ved oploesningssyntese | |
CA2090205A1 (en) | Speech coding system | |
US5924063A (en) | Celp-type speech encoder having an improved long-term predictor | |
FR2596893B1 (fr) | Dispositif de mise en oeuvre d'un algorithme dit de leroux-gueguen, pour le codage d'un signal par prediction lineaire | |
FI102375B1 (fi) | Menetelmä deoksinukleosidien valmistamiseksi | |
DE68915057T2 (de) | Kodierungsverfahren und linearer Prädiktionssprachkodierer. | |
CA2111409A1 (en) | System for Search of a Codebook in a Speech Encoder | |
JPH0683393A (ja) | 音声符号化装置 | |
ITFI920056U1 (it) | " banco per la lavorazione di infissi metallici, con componenti estraibili su guide, per aumentare la superficie utile di appoggio " |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |