IT1271182B - Metodo per migliorare le prestazioni dei codificatori vocali - Google Patents

Metodo per migliorare le prestazioni dei codificatori vocali

Info

Publication number
IT1271182B
IT1271182B ITMI941283A ITMI941283A IT1271182B IT 1271182 B IT1271182 B IT 1271182B IT MI941283 A ITMI941283 A IT MI941283A IT MI941283 A ITMI941283 A IT MI941283A IT 1271182 B IT1271182 B IT 1271182B
Authority
IT
Italy
Prior art keywords
performance
improve
voice coders
synthetic
target function
Prior art date
Application number
ITMI941283A
Other languages
English (en)
Inventor
Silvio Cucchi
Marco Fratti
Original Assignee
Alcatel Italia
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 Alcatel Italia filed Critical Alcatel Italia
Priority to ITMI941283A priority Critical patent/IT1271182B/it
Publication of ITMI941283A0 publication Critical patent/ITMI941283A0/it
Priority to DE69512323T priority patent/DE69512323T2/de
Priority to EP95108870A priority patent/EP0689189B1/en
Priority to AU21753/95A priority patent/AU698340B2/en
Publication of ITMI941283A1 publication Critical patent/ITMI941283A1/it
Application granted granted Critical
Publication of IT1271182B publication Critical patent/IT1271182B/it

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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation 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
    • 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

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)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

L'invenzione si riferisce ad un metodo per migliorare le prestazioni dei codificatori vocali basati su tecniche di predizione lineare e di analisi per sintesi facenti uso di una funzione obiettivo da minimizzare.Questa funzione obiettivo comprende congiuntamente o in alternativa l'evoluzione libera del segnale obiettivo e di quello sintetico e una pesatura rispetto all'errore fra il residuo di predizione e l'eccitazione sintetica.
ITMI941283A 1994-06-20 1994-06-20 Metodo per migliorare le prestazioni dei codificatori vocali IT1271182B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITMI941283A IT1271182B (it) 1994-06-20 1994-06-20 Metodo per migliorare le prestazioni dei codificatori vocali
DE69512323T DE69512323T2 (de) 1994-06-20 1995-06-08 Methode zur Verbesserung der Eigenschaften von Sprachkodierern
EP95108870A EP0689189B1 (en) 1994-06-20 1995-06-08 Method of improving the features of voice coders
AU21753/95A AU698340B2 (en) 1994-06-20 1995-06-20 Voice coder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI941283A IT1271182B (it) 1994-06-20 1994-06-20 Metodo per migliorare le prestazioni dei codificatori vocali

Publications (3)

Publication Number Publication Date
ITMI941283A0 ITMI941283A0 (it) 1994-06-20
ITMI941283A1 ITMI941283A1 (it) 1995-12-20
IT1271182B true IT1271182B (it) 1997-05-27

Family

ID=11369140

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI941283A IT1271182B (it) 1994-06-20 1994-06-20 Metodo per migliorare le prestazioni dei codificatori vocali

Country Status (4)

Country Link
EP (1) EP0689189B1 (it)
AU (1) AU698340B2 (it)
DE (1) DE69512323T2 (it)
IT (1) IT1271182B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3273455B2 (ja) * 1994-10-07 2002-04-08 日本電信電話株式会社 ベクトル量子化方法及びその復号化器
DE10047172C1 (de) * 2000-09-22 2001-11-29 Siemens Ag Verfahren zur Sprachverarbeitung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235669A (en) * 1990-06-29 1993-08-10 At&T Laboratories Low-delay code-excited linear-predictive coding of wideband speech at 32 kbits/sec
FI98104C (fi) * 1991-05-20 1997-04-10 Nokia Mobile Phones Ltd Menetelmä herätevektorin generoimiseksi ja digitaalinen puhekooderi
JPH06138896A (ja) * 1991-05-31 1994-05-20 Motorola Inc 音声フレームを符号化するための装置および方法

Also Published As

Publication number Publication date
AU2175395A (en) 1996-01-04
EP0689189B1 (en) 1999-09-22
ITMI941283A1 (it) 1995-12-20
DE69512323D1 (de) 1999-10-28
DE69512323T2 (de) 2000-07-06
ITMI941283A0 (it) 1994-06-20
EP0689189A1 (en) 1995-12-27
AU698340B2 (en) 1998-10-29

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970530