Improvement issues on transcoding algorithms: For the flexible usage to the various pairs of speech codec

Jin Kyu Choi; Chang Heon Lee; Hong Goo Kang; Young Cheol Park; Dae Hee Youn

Improvement issues on transcoding algorithms: For the flexible usage to the various pairs of speech codec

Jin Kyu Choi, Chang Heon Lee, Hong Goo Kang, Young Cheol Park, Dae Hee Youn

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

This paper describes important issues on transcoding between different speech codecs by considering the paradigms of source and target coders, Conventional transcoding algorithms on LSP, pitch and adaptive/fixed codebook conversion are refined with regard to the structure of coders. In addition, a new perceptual weighting filter that plays a role in post-filter and perceptual weighting filter together is proposed to further improve the performance. The performance of the proposed algorithms is verified in step-by-step manner with the examples of transcoding between AMR, G.723.1 and G.729. By employing the proposed algorithm to the transcoders, the complexity is reduced by about 20%-76.88% and quality is also improved compared to conventional approaches.

Original language	English
Pages (from-to)	I269-I272
Journal	ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume	1
Publication status	Published - 2004
Event	Proceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing - Montreal, Que, Canada Duration: 2004 May 17 → 2004 May 21

All Science Journal Classification (ASJC) codes

Software
Signal Processing
Electrical and Electronic Engineering

Cite this

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title = "Improvement issues on transcoding algorithms: For the flexible usage to the various pairs of speech codec",

abstract = "This paper describes important issues on transcoding between different speech codecs by considering the paradigms of source and target coders, Conventional transcoding algorithms on LSP, pitch and adaptive/fixed codebook conversion are refined with regard to the structure of coders. In addition, a new perceptual weighting filter that plays a role in post-filter and perceptual weighting filter together is proposed to further improve the performance. The performance of the proposed algorithms is verified in step-by-step manner with the examples of transcoding between AMR, G.723.1 and G.729. By employing the proposed algorithm to the transcoders, the complexity is reduced by about 20%-76.88% and quality is also improved compared to conventional approaches.",

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note = "Proceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing ; Conference date: 17-05-2004 Through 21-05-2004",

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T1 - Improvement issues on transcoding algorithms

T2 - Proceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing

AU - Choi, Jin Kyu

AU - Lee, Chang Heon

AU - Kang, Hong Goo

AU - Park, Young Cheol

AU - Youn, Dae Hee

PY - 2004

Y1 - 2004

N2 - This paper describes important issues on transcoding between different speech codecs by considering the paradigms of source and target coders, Conventional transcoding algorithms on LSP, pitch and adaptive/fixed codebook conversion are refined with regard to the structure of coders. In addition, a new perceptual weighting filter that plays a role in post-filter and perceptual weighting filter together is proposed to further improve the performance. The performance of the proposed algorithms is verified in step-by-step manner with the examples of transcoding between AMR, G.723.1 and G.729. By employing the proposed algorithm to the transcoders, the complexity is reduced by about 20%-76.88% and quality is also improved compared to conventional approaches.

AB - This paper describes important issues on transcoding between different speech codecs by considering the paradigms of source and target coders, Conventional transcoding algorithms on LSP, pitch and adaptive/fixed codebook conversion are refined with regard to the structure of coders. In addition, a new perceptual weighting filter that plays a role in post-filter and perceptual weighting filter together is proposed to further improve the performance. The performance of the proposed algorithms is verified in step-by-step manner with the examples of transcoding between AMR, G.723.1 and G.729. By employing the proposed algorithm to the transcoders, the complexity is reduced by about 20%-76.88% and quality is also improved compared to conventional approaches.

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AN - SCOPUS:4544229748

SN - 0736-7791

VL - 1

SP - I269-I272

JO - Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing

JF - Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing

Y2 - 17 May 2004 through 21 May 2004

ER -

Improvement issues on transcoding algorithms: For the flexible usage to the various pairs of speech codec

Abstract

All Science Journal Classification (ASJC) codes

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