Browse > Article

Tandemless Transcoding for AMR and EVRC Speech Coders  

이선일 (한국과학기술원 전자전산학과)
유창동 (한국과학기술원 전자전산학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.21, no.6, 2002 , pp. 531-542 More about this Journal
Abstract
Novel tandemless transcoding method for AMR and EVRC speech coders is proposed in this paper. In contrast to conventional tandem method, the parameters which is used commonly in speech coder where CELP algorithm is adapted are directly transcoded. The proposed algorithm is composed of LSP transcoding, pitch delay transcoding, gains transcoding and fixed codebook vector transcoding Evaluation results show that the novel algorithm achieves better speech quality than tandem method and reduce computational complexity and delay.
Keywords
AMR; EVRC; Speech coding; AMR; EVRC; Transcoding; Tandem; Tandemless;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Code-excited linear prediction (CELP) high-quality speech at very low bit rates /
[ M.R.Schroeder;B.S.Atal ] / Int. Conf. on Acoustics, Speech and Signal Processing
2 /
[] / TIA/EIA/IS-127, Enhanced variable rate codec, speech service option 3 for wideband spread spectrum digital systems
3 /
[ A,M.Kondoz ] / Digital Speech coding for Low Bit Rate Communications Systems
4 The RCELP Speech-Coding Algorithm /
[ W.B.Kleijn;P.Kroon ] / European Trans. on Telecom.
5 /
[] / 3GPP TS 26.090 V5.0.0, Adaptive Multi-Rate (AMR) speech codec; Transcoding functions
6 Improving transcoding capability of speech coders in clean and frame erasured channel environments /
[ H.G.Kang;H.K.Kim;R.V.Cox ] / IEEE Proc. 2000 IEEE Workshop on Speech Coding
7 Efficient vector quantization of LPC parameters at 24 bits/frame /
[ K.K.Paliwal;B.S.Atal ] / IEEE Trans. Speech and Audio Processing   DOI   ScienceOn
8 8kbps G.729A에서 5.3kbps G.723.1로의 상호 부호화 알고리듬 /
[ 윤성완;정성교;박영철;윤대희 ] / 신호처리합동학술대회 논문집
9 Analysis-by-Synthesis Speech Coding Based on Relaxed Waveform-Matching Constraints /
[ W.B.kleijn ] / Ph. D. dissertation, Delft University of Technology