IT1270439B - Procedimento e dispositivo per la quantizzazione dei parametri spettrali in codificatori numerici della voce - Google Patents

Procedimento e dispositivo per la quantizzazione dei parametri spettrali in codificatori numerici della voce

Info

Publication number
IT1270439B
IT1270439B ITTO930420A ITTO930420A IT1270439B IT 1270439 B IT1270439 B IT 1270439B IT TO930420 A ITTO930420 A IT TO930420A IT TO930420 A ITTO930420 A IT TO930420A IT 1270439 B IT1270439 B IT 1270439B
Authority
IT
Italy
Prior art keywords
quantization
voice
procedure
spectral parameters
signal
Prior art date
Application number
ITTO930420A
Other languages
English (en)
Inventor
Daniele Sereno
Original Assignee
Sip
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 Sip filed Critical Sip
Publication of ITTO930420A0 publication Critical patent/ITTO930420A0/it
Priority to ITTO930420A priority Critical patent/IT1270439B/it
Priority to US08/243,297 priority patent/US5546498A/en
Priority to CA002124645A priority patent/CA2124645C/en
Priority to AT94108873T priority patent/ATE172046T1/de
Priority to ES94108873T priority patent/ES2065872T3/es
Priority to JP15057294A priority patent/JP3197156B2/ja
Priority to DE69413747T priority patent/DE69413747T2/de
Priority to EP94108873A priority patent/EP0628946B1/en
Priority to DE0628946T priority patent/DE628946T1/de
Priority to FI942762A priority patent/FI112004B/fi
Publication of ITTO930420A1 publication Critical patent/ITTO930420A1/it
Priority to GR950300012T priority patent/GR950300012T1/el
Application granted granted Critical
Publication of IT1270439B publication Critical patent/IT1270439B/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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

Si descrivono un procedimento e un'apparecchiatura per la codifica numerica del segnale vocale in cui a ogni trama si quantizzano i parametri spettrali in modo da sfruttare la correlazione effettiva all'interno di una trama o tra trame contigue. I dispositivi di quantizzazione (DQ) riconoscono i periodi di segnale con forte correlazione utilizzando un primo insieme di indici (jl), rappresentativi dei parametri, forniti dai circuiti di analisi spettrale (ABT, ALT) e in questi periodi convertono gli indici stessi in un secondo insieme di indici (j4), codificabile con un numero minore di bit, che viene inserito nel segnale codificato al posto del primo insieme (Fig. 1).
ITTO930420A 1993-06-10 1993-06-10 Procedimento e dispositivo per la quantizzazione dei parametri spettrali in codificatori numerici della voce IT1270439B (it)

Priority Applications (11)

Application Number Priority Date Filing Date Title
ITTO930420A IT1270439B (it) 1993-06-10 1993-06-10 Procedimento e dispositivo per la quantizzazione dei parametri spettrali in codificatori numerici della voce
US08/243,297 US5546498A (en) 1993-06-10 1994-05-17 Method of and device for quantizing spectral parameters in digital speech coders
CA002124645A CA2124645C (en) 1993-06-10 1994-05-30 Method of and device for quantizing spectral parameters in digital speech coders
DE69413747T DE69413747T2 (de) 1993-06-10 1994-06-09 Verfahren und Vorrichtung zur Quantisierung von Spektralparametern in digitalen Sprachkodierern
ES94108873T ES2065872T3 (es) 1993-06-10 1994-06-09 Procedimiento y dispositivo para cuantificar parametros espectrales en codificadores numericos de voz.
JP15057294A JP3197156B2 (ja) 1993-06-10 1994-06-09 ディジタル音声コーダ及びデコーダにおけるスペクトルパラメータを量子化及び逆量子化する方法及び装置
AT94108873T ATE172046T1 (de) 1993-06-10 1994-06-09 Verfahren und vorrichtung zur quantisierung von spektralparametern in digitalen sprachkodierern
EP94108873A EP0628946B1 (en) 1993-06-10 1994-06-09 Method of and device for quantizing spectral parameters in digital speech coders
DE0628946T DE628946T1 (de) 1993-06-10 1994-06-09 Verfahren und Vorrichtung für digitale Sprachkodierer mit quantisierten Spectralparametern.
FI942762A FI112004B (fi) 1993-06-10 1994-06-10 Menetelmä ja laite spektriparametrien kvantisointiin digitaalisissa puhekoodereissa
GR950300012T GR950300012T1 (en) 1993-06-10 1995-03-31 Method of and device for quantizing spectral parameters in digital speech coders.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO930420A IT1270439B (it) 1993-06-10 1993-06-10 Procedimento e dispositivo per la quantizzazione dei parametri spettrali in codificatori numerici della voce

Publications (3)

Publication Number Publication Date
ITTO930420A0 ITTO930420A0 (it) 1993-06-10
ITTO930420A1 ITTO930420A1 (it) 1994-12-10
IT1270439B true IT1270439B (it) 1997-05-05

Family

ID=11411550

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO930420A IT1270439B (it) 1993-06-10 1993-06-10 Procedimento e dispositivo per la quantizzazione dei parametri spettrali in codificatori numerici della voce

Country Status (10)

Country Link
US (1) US5546498A (it)
EP (1) EP0628946B1 (it)
JP (1) JP3197156B2 (it)
AT (1) ATE172046T1 (it)
CA (1) CA2124645C (it)
DE (2) DE69413747T2 (it)
ES (1) ES2065872T3 (it)
FI (1) FI112004B (it)
GR (1) GR950300012T1 (it)
IT (1) IT1270439B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3237089B2 (ja) * 1994-07-28 2001-12-10 株式会社日立製作所 音響信号符号化復号方法
JPH08179796A (ja) * 1994-12-21 1996-07-12 Sony Corp 音声符号化方法
DE69615227T2 (de) * 1995-01-17 2002-04-25 Nec Corp Sprachkodierer mit aus aktuellen und vorhergehenden Rahmen extrahierten Merkmalen
JP3308764B2 (ja) * 1995-05-31 2002-07-29 日本電気株式会社 音声符号化装置
EP2040253B1 (en) * 2000-04-24 2012-04-11 Qualcomm Incorporated Predictive dequantization of voiced speech
CN107452391B (zh) 2014-04-29 2020-08-25 华为技术有限公司 音频编码方法及相关装置
EP3125108A1 (en) * 2015-07-31 2017-02-01 ARM Limited Vector processing using loops of dynamic vector length

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8500843A (nl) * 1985-03-22 1986-10-16 Koninkl Philips Electronics Nv Multipuls-excitatie lineair-predictieve spraakcoder.
EP0331858B1 (en) * 1988-03-08 1993-08-25 International Business Machines Corporation Multi-rate voice encoding method and device
US5179626A (en) * 1988-04-08 1993-01-12 At&T Bell Laboratories Harmonic speech coding arrangement where a set of parameters for a continuous magnitude spectrum is determined by a speech analyzer and the parameters are used by a synthesizer to determine a spectrum which is used to determine senusoids for synthesis
DE69133296T2 (de) * 1990-02-22 2004-01-29 Nec Corp Sprachcodierer
US5351338A (en) * 1992-07-06 1994-09-27 Telefonaktiebolaget L M Ericsson Time variable spectral analysis based on interpolation for speech coding

Also Published As

Publication number Publication date
ITTO930420A1 (it) 1994-12-10
JP3197156B2 (ja) 2001-08-13
DE628946T1 (de) 1995-08-03
EP0628946A1 (en) 1994-12-14
FI942762A0 (fi) 1994-06-10
JPH0720897A (ja) 1995-01-24
CA2124645A1 (en) 1994-12-11
CA2124645C (en) 1998-07-21
ES2065872T1 (es) 1995-03-01
US5546498A (en) 1996-08-13
GR950300012T1 (en) 1995-03-31
EP0628946B1 (en) 1998-10-07
ATE172046T1 (de) 1998-10-15
DE69413747D1 (de) 1998-11-12
FI112004B (fi) 2003-10-15
ES2065872T3 (es) 1998-12-16
DE69413747T2 (de) 1999-04-15
FI942762A (fi) 1994-12-11
ITTO930420A0 (it) 1993-06-10

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