ES2131498T3 - Decodificador digital de voz que tiene un postfiltro con distorsion espectral reducida. - Google Patents

Decodificador digital de voz que tiene un postfiltro con distorsion espectral reducida.

Info

Publication number
ES2131498T3
ES2131498T3 ES90913916T ES90913916T ES2131498T3 ES 2131498 T3 ES2131498 T3 ES 2131498T3 ES 90913916 T ES90913916 T ES 90913916T ES 90913916 T ES90913916 T ES 90913916T ES 2131498 T3 ES2131498 T3 ES 2131498T3
Authority
ES
Spain
Prior art keywords
postfilter
digital voice
spectral distortion
voice decoder
denominator
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
Application number
ES90913916T
Other languages
English (en)
Inventor
Ira Alan Gerson
Mark Antoni Jasiuk
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 Inc
Original Assignee
Motorola Inc
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 Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of ES2131498T3 publication Critical patent/ES2131498T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • G10L19/26—Pre-filtering or post-filtering

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)
  • Filters That Use Time-Delay Elements (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

UN POSTFILTRO ESPECTRAL ADAPTABLE (108) COLOCADO EN UNA PLATAFORMA DE VOZ SINTETIZADA QUE TIENE UNA CARACTERISTICA DE DENOMINADOR CORRESPONDIENTE A UNA FASE DE FILTRO LPC PRECEDENTE (106) Y UNA CARACTERISTICA DE NUMERADOR QUE SE DESARROLLA COMO UNA FUNCION DE LA CARACTERISTICA DE DENOMINADOR POR MEDIO DE LA APLICACION DE TECNICAS DE FILTRADO ESPECTRAL. ESTO PERMITE AL NUMERADOR SEGUIR AL DENOMINADOR SIN LA INTRODUCCION DE DISTORSIONES ESPECTRALES QUE DE OTRO MODO AFECTARIAN AL PROCESAMIENTO DE FORMA DESFAVORABLE.
ES90913916T 1989-10-17 1990-09-17 Decodificador digital de voz que tiene un postfiltro con distorsion espectral reducida. Expired - Lifetime ES2131498T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US42292689A 1989-10-17 1989-10-17

Publications (1)

Publication Number Publication Date
ES2131498T3 true ES2131498T3 (es) 1999-08-01

Family

ID=23676980

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90913916T Expired - Lifetime ES2131498T3 (es) 1989-10-17 1990-09-17 Decodificador digital de voz que tiene un postfiltro con distorsion espectral reducida.

Country Status (8)

Country Link
EP (1) EP0570362B1 (es)
JP (1) JP3158434B2 (es)
CN (1) CN1078371C (es)
AT (1) ATE177867T1 (es)
AU (1) AU635342B2 (es)
DE (1) DE69033011T2 (es)
ES (1) ES2131498T3 (es)
WO (1) WO1991006093A1 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729244B1 (fr) * 1995-01-06 1997-03-28 Matra Communication Procede de codage de parole a analyse par synthese
FR2729246A1 (fr) * 1995-01-06 1996-07-12 Matra Communication Procede de codage de parole a analyse par synthese
FR2729247A1 (fr) * 1995-01-06 1996-07-12 Matra Communication Procede de codage de parole a analyse par synthese
JP2993396B2 (ja) * 1995-05-12 1999-12-20 三菱電機株式会社 音声加工フィルタ及び音声合成装置
DE19643900C1 (de) * 1996-10-30 1998-02-12 Ericsson Telefon Ab L M Nachfiltern von Hörsignalen, speziell von Sprachsignalen
US6137844A (en) * 1998-02-02 2000-10-24 Oki Telecom, Inc. Digital filter for noise and error removal in transmitted analog signals

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4301329A (en) * 1978-01-09 1981-11-17 Nippon Electric Co., Ltd. Speech analysis and synthesis apparatus
US4617676A (en) * 1984-09-04 1986-10-14 At&T Bell Laboratories Predictive communication system filtering arrangement
JP2535833B2 (ja) * 1986-07-03 1996-09-18 日本電気株式会社 集積回路
US4852169A (en) * 1986-12-16 1989-07-25 GTE Laboratories, Incorporation Method for enhancing the quality of coded speech
US4969192A (en) * 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
US4817157A (en) * 1988-01-07 1989-03-28 Motorola, Inc. Digital speech coder having improved vector excitation source

Also Published As

Publication number Publication date
CN1078371C (zh) 2002-01-23
EP0570362B1 (en) 1999-03-17
AU6411490A (en) 1991-05-16
JPH05500573A (ja) 1993-02-04
ATE177867T1 (de) 1999-04-15
CN1051101A (zh) 1991-05-01
WO1991006093A1 (en) 1991-05-02
AU635342B2 (en) 1993-03-18
EP0570362A1 (en) 1993-11-24
DE69033011T2 (de) 2001-10-04
EP0570362A4 (en) 1993-07-01
DE69033011D1 (de) 1999-04-22
JP3158434B2 (ja) 2001-04-23

Similar Documents

Publication Publication Date Title
AR001928A1 (es) Filtro para el mejoramiento y modificación de señales
FR2522179B1 (fr) Procede et appareil de reconnaissance de paroles permettant de reconnaitre des phonemes particuliers du signal vocal quelle que soit la personne qui parle
EP0219109A3 (en) Method of analyzing input speech and speech analysis apparatus therefor
DE69423838D1 (de) Semantische Gleichereignisfilterung für Spracherkennung und Signalübersetzungsanwendungen
EA200100901A1 (ru) Система и способ автоматизированной записи речи с использованием двух экземпляров преобразования речи и автоматизированной коррекции
DE69807765D1 (de) Kombination von Frequenzverzerrung und spektraler Formung in einem HMM - basierten Spracherkenner
EP0059880A3 (en) Text-to-speech synthesis system
GB2073465B (en) Continuous speech recognition
GB2047055B (en) Speech analysis system
DE3473955D1 (en) Voice messaging system with unified pitch and voice tracking
SE9401613L (sv) Metod och anordning vid tal- till textomvandling
MX9505299A (es) Sistemas, metodos y articulos de fabricacion para realizar la hipotesizacion de n-cadenas optimas de alta resolucion.
EP0892353A3 (en) Method and apparatus for speech translation with unrecognized segments
DE69618503D1 (de) Spracherkennung für Tonsprachen
DE3275779D1 (en) Recognition of speech or speech-like sounds
AU7703081A (en) Speech phoneme recognition
DE3273358D1 (en) Recognition of speech or speech-like sounds using associative memory
ES2131498T3 (es) Decodificador digital de voz que tiene un postfiltro con distorsion espectral reducida.
DE69425226D1 (de) Sprachdekoder zur Erzeugung von Hintergrundgeräuschen
JPS55111995A (en) Method and device for voice synthesis
DE3277095D1 (en) Allophone vocoder
DE3853702D1 (de) Spracherkennung.
EP0840211A3 (en) Variable lookahead parser generator
MX9605178A (es) Un filtro posterior o post-filtro de paso.
JPS56106300A (en) Method and device for generating voice signal

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 570362

Country of ref document: ES