KR960027371A - 선스펙트럼쌍주파수의 벡터-스칼라 결합 양자화기 - Google Patents

선스펙트럼쌍주파수의 벡터-스칼라 결합 양자화기 Download PDF

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Publication number
KR960027371A
KR960027371A KR1019940036573A KR19940036573A KR960027371A KR 960027371 A KR960027371 A KR 960027371A KR 1019940036573 A KR1019940036573 A KR 1019940036573A KR 19940036573 A KR19940036573 A KR 19940036573A KR 960027371 A KR960027371 A KR 960027371A
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KR
South Korea
Prior art keywords
vector
quantizer
line spectrum
scalar
spectrum pair
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KR1019940036573A
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English (en)
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KR0135907B1 (ko
Inventor
이인성
김재원
윤병식
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양승택
재단법인 한국전자통신연구소
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Priority to KR1019940036573A priority Critical patent/KR0135907B1/ko
Publication of KR960027371A publication Critical patent/KR960027371A/ko
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Publication of KR0135907B1 publication Critical patent/KR0135907B1/ko

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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/07—Line spectrum pair [LSP] vocoders
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/032—Quantisation or dequantisation of spectral components

Abstract

본 발명은 선형예측부호화(Linear Predictive coding:LPC) 방식의 음성부호화에 있어서 선형스펙트럼쌍을 이용하여 LPC 계수를 전송하는데 있어 LSP 주파수를 벡터 양자화기와 스칼라 양자화기를 결합하여 양자화하는 선스펙트럼쌍주파수의 벡터-스칼라 결합 양자화기에 관한 것으로서, 선스펙트럼쌍의 순서화특성에 따라 벡터-스칼라를 혼합하는 선트펙트럼쌍을 양자화한다.

Description

선스펙트럼쌍주파수의 벡터-스칼라 결합 양자화기
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 디지틀 음성부호화기의 디코딩 구조도, 제3도는 선스펙트럼쌍(Linear Spectrum Pair;LSP) 주파수의 LSP 전송코드로의 벡터-스칼라 결합 양자화 구도.

Claims (4)

  1. 선스펙트럼쌍의 순서화특성에 따라 벡터-스칼라를 혼합하는 선스펙트럼쌍을 양자화하는 것을 특징으로 하는 선스펙트럼쌍주파수의 벡터-스칼라 결합 양자화기.
  2. 제1항에 있어서, 상기 선스펙트럼쌍의 양자화범위가 다음의 식에 의해 제한하는 음석부호화기를 구성하는 것을 특징으로 하는 선스펙트럼쌍주파수의 벡터-스칼라 결합 양자화기.
    Vq i(n)=Vi(indexv), w~ i(n)=wi(n)v|q i(n), ei(n)=w~ i(n)-wpi(n), e^ i(n)=
    Q-1[Qwi[ei(n)]],
    w^ i(n)=wpi(n)+e^ i(n), wpi(n)=0.3625w|^ i(n-1), Pw(z)=0.3625z -1
    i=1,2,…,10
  3. 제1항에 있어서, 아래의 식에 의거하여 음성부호화기를 구성하는 선스펙트럼쌍주파수의 벡터-스칼라 양자화기.
    Qti(ei(n))=round()
  4. 제1항에 있어서, 아래의 식을 의거하여 선스펙트럼쌍의 역양자화는 음성부호화기를 구성하는 것을 특징으로 하는 선스펙트럼쌍주파수의 벡터-스칼라 양자화기.
    Qw -1=-Qmax wi, i-0,1,…,9,n isframe
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940036573A 1994-12-24 1994-12-24 선스펙트럼쌍주파수의 벡터-스칼라 결합 양자화기(Vector and Scalar Quantizer of LSP Frequency) KR0135907B1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940036573A KR0135907B1 (ko) 1994-12-24 1994-12-24 선스펙트럼쌍주파수의 벡터-스칼라 결합 양자화기(Vector and Scalar Quantizer of LSP Frequency)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940036573A KR0135907B1 (ko) 1994-12-24 1994-12-24 선스펙트럼쌍주파수의 벡터-스칼라 결합 양자화기(Vector and Scalar Quantizer of LSP Frequency)

Publications (2)

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KR960027371A true KR960027371A (ko) 1996-07-22
KR0135907B1 KR0135907B1 (ko) 1998-05-15

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KR1019940036573A KR0135907B1 (ko) 1994-12-24 1994-12-24 선스펙트럼쌍주파수의 벡터-스칼라 결합 양자화기(Vector and Scalar Quantizer of LSP Frequency)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100389898B1 (ko) * 1996-10-31 2003-10-17 삼성전자주식회사 음성부호화에 있어서 선스펙트럼쌍 계수의 양자화 방법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100389898B1 (ko) * 1996-10-31 2003-10-17 삼성전자주식회사 음성부호화에 있어서 선스펙트럼쌍 계수의 양자화 방법

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KR0135907B1 (ko) 1998-05-15

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