A method to skip look-ahead samples in AMR speech codec

Chun Ling Zhang; Sheng Hui Zhao; Ying Xue Wang; Jing Ming Kuang

A method to skip look-ahead samples in AMR speech codec

Chun Ling Zhang, Sheng Hui Zhao^*, Ying Xue Wang, Jing Ming Kuang

^*Corresponding author for this work

School of Information and Electronics

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

A method was proposed to skip the look-ahead samples in this paper. Firstly, the method used the covariance algorithm to calculate the linear prediction (LP) coefficients. Secondly, LP coefficients were utilized to produce the new samples. Finally, the new samples were used to replace the look-ahead samples. To evaluate the voice quality, the objective evaluation and subjective evaluation were designed respectively and the complexity test was calculated. Experiments show that the reconstructed quality of the proposed method is near to the original AMR codec, and the delay of the proposed method is lower 5 ms than the original method.

Original language	English
Pages (from-to)	727-731
Number of pages	5
Journal	Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume	34
Issue number	7
Publication status	Published - 1 Jul 2014

Keywords

Adaptive multi-rate (AMR)
Covariance
Linear prediction (LP)
Look-ahead
Speech codec

Cite this

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title = "A method to skip look-ahead samples in AMR speech codec",

abstract = "A method was proposed to skip the look-ahead samples in this paper. Firstly, the method used the covariance algorithm to calculate the linear prediction (LP) coefficients. Secondly, LP coefficients were utilized to produce the new samples. Finally, the new samples were used to replace the look-ahead samples. To evaluate the voice quality, the objective evaluation and subjective evaluation were designed respectively and the complexity test was calculated. Experiments show that the reconstructed quality of the proposed method is near to the original AMR codec, and the delay of the proposed method is lower 5 ms than the original method.",

keywords = "Adaptive multi-rate (AMR), Covariance, Linear prediction (LP), Look-ahead, Speech codec",

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AU - Zhang, Chun Ling

AU - Zhao, Sheng Hui

AU - Wang, Ying Xue

AU - Kuang, Jing Ming

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Y1 - 2014/7/1

N2 - A method was proposed to skip the look-ahead samples in this paper. Firstly, the method used the covariance algorithm to calculate the linear prediction (LP) coefficients. Secondly, LP coefficients were utilized to produce the new samples. Finally, the new samples were used to replace the look-ahead samples. To evaluate the voice quality, the objective evaluation and subjective evaluation were designed respectively and the complexity test was calculated. Experiments show that the reconstructed quality of the proposed method is near to the original AMR codec, and the delay of the proposed method is lower 5 ms than the original method.

AB - A method was proposed to skip the look-ahead samples in this paper. Firstly, the method used the covariance algorithm to calculate the linear prediction (LP) coefficients. Secondly, LP coefficients were utilized to produce the new samples. Finally, the new samples were used to replace the look-ahead samples. To evaluate the voice quality, the objective evaluation and subjective evaluation were designed respectively and the complexity test was calculated. Experiments show that the reconstructed quality of the proposed method is near to the original AMR codec, and the delay of the proposed method is lower 5 ms than the original method.

KW - Adaptive multi-rate (AMR)

KW - Covariance

KW - Linear prediction (LP)

KW - Look-ahead

KW - Speech codec

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JF - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology

IS - 7

ER -

A method to skip look-ahead samples in AMR speech codec

Abstract

Keywords

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