Training Method of The Excitation Codebook for CELP

Takehiro Moriya; Satoshi Miki; Kazunori Mano; Hitoshi Ohmuro

Training Method of The Excitation Codebook for CELP

Takehiro Moriya, Satoshi Miki, Kazunori Mano, Hitoshi Ohmuro

Research output: Contribution to conference › Paper › peer-review

Abstract

An iterative training method is proposed for the design of random codebooks and channel code mapping tables for a CELP coder. The method is based on a structured excitation source such as a conjugate structure, pitch isynchronization, rotation of samples, time-domain sloped gain, and code mapping to channel code. Closed-loop distortion measure, that is, perceptually weighted distortion between the input and the synthesized speech, is used in all training procedures. The training improves the SNR by around 1 dB and improves subjective quality. The channel code mapping and channel-matched distortion measure increases robustness against channel error.

Original language	English
Pages	1155-1158
Number of pages	4
Publication status	Published - 1993
Event	3rd European Conference on Speech Communication and Technology, EUROSPEECH 1993 - Berlin, Germany Duration: 1993 Sep 22 → 1993 Sep 25

Conference

Conference	3rd European Conference on Speech Communication and Technology, EUROSPEECH 1993
Country/Territory	Germany
City	Berlin
Period	93/9/22 → 93/9/25

Keywords

CELP
code mapping
codebook
training

ASJC Scopus subject areas

Software
Linguistics and Language
Computer Science Applications
Communication

Cite this

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title = "Training Method of The Excitation Codebook for CELP",

abstract = "An iterative training method is proposed for the design of random codebooks and channel code mapping tables for a CELP coder. The method is based on a structured excitation source such as a conjugate structure, pitch isynchronization, rotation of samples, time-domain sloped gain, and code mapping to channel code. Closed-loop distortion measure, that is, perceptually weighted distortion between the input and the synthesized speech, is used in all training procedures. The training improves the SNR by around 1 dB and improves subjective quality. The channel code mapping and channel-matched distortion measure increases robustness against channel error.",

keywords = "CELP, code mapping, codebook, training",

author = "Takehiro Moriya and Satoshi Miki and Kazunori Mano and Hitoshi Ohmuro",

note = "Funding Information: The authors would like to thank Dr. Nobuhiko Kitawaki, Takao Kaneko, Dr. Yukio Kobayashi, and Dr. Sadaoki Furui for their helpful guidance. They are also grateful to Hirohito Suda and Jyotaro Ikedo for their discussions on channel code errors, and to the staff members for their discussions on speech quality. Publisher Copyright: {\textcopyright} 1993 3rd European Conference on Speech Communication and Technology, EUROSPEECH 1993. All rights reserved.; 3rd European Conference on Speech Communication and Technology, EUROSPEECH 1993 ; Conference date: 22-09-1993 Through 25-09-1993",

year = "1993",

language = "English",

pages = "1155--1158",

}

TY - CONF

T1 - Training Method of The Excitation Codebook for CELP

AU - Moriya, Takehiro

AU - Miki, Satoshi

AU - Mano, Kazunori

AU - Ohmuro, Hitoshi

N1 - Funding Information: The authors would like to thank Dr. Nobuhiko Kitawaki, Takao Kaneko, Dr. Yukio Kobayashi, and Dr. Sadaoki Furui for their helpful guidance. They are also grateful to Hirohito Suda and Jyotaro Ikedo for their discussions on channel code errors, and to the staff members for their discussions on speech quality. Publisher Copyright: © 1993 3rd European Conference on Speech Communication and Technology, EUROSPEECH 1993. All rights reserved.

PY - 1993

Y1 - 1993

N2 - An iterative training method is proposed for the design of random codebooks and channel code mapping tables for a CELP coder. The method is based on a structured excitation source such as a conjugate structure, pitch isynchronization, rotation of samples, time-domain sloped gain, and code mapping to channel code. Closed-loop distortion measure, that is, perceptually weighted distortion between the input and the synthesized speech, is used in all training procedures. The training improves the SNR by around 1 dB and improves subjective quality. The channel code mapping and channel-matched distortion measure increases robustness against channel error.

AB - An iterative training method is proposed for the design of random codebooks and channel code mapping tables for a CELP coder. The method is based on a structured excitation source such as a conjugate structure, pitch isynchronization, rotation of samples, time-domain sloped gain, and code mapping to channel code. Closed-loop distortion measure, that is, perceptually weighted distortion between the input and the synthesized speech, is used in all training procedures. The training improves the SNR by around 1 dB and improves subjective quality. The channel code mapping and channel-matched distortion measure increases robustness against channel error.

KW - CELP

KW - code mapping

KW - codebook

KW - training

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M3 - Paper

AN - SCOPUS:84985847721

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EP - 1158

T2 - 3rd European Conference on Speech Communication and Technology, EUROSPEECH 1993

Y2 - 22 September 1993 through 25 September 1993

ER -

Training Method of The Excitation Codebook for CELP

Abstract

Conference

Keywords

ASJC Scopus subject areas

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