Browse > Article

AMR-WB Algebraic Codebook Search Method Using the Re-examination of Pulses Position  

Hur, Seok (Dept. of Radio Science & Engineering Chungbuk National University)
Lee, In-Sung (School of Electrical & Computer Engineering Chungbuk National University)
Jee, Deock-Gu (Mobile Telecommunication Research Laboratory Electronics and Telecommunications Research Institute)
Yoon, Byung-Sik (Mobile Telecommunication Research Laboratory Electronics and Telecommunications Research Institute)
Choi, Song-In (Mobile Telecommunication Research Laboratory Electronics and Telecommunications Research Institute)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.40, no.4, 2003 , pp. 292-302 More about this Journal
Abstract
We propose a new method to reduce the complexity of excitation codebook search. The preselected excitation pulses by the coarse search method can be updated to pulses with higher quality performance measure. The excitation pulses can arbitrarily be deleted and inserted among the searched pulses until the overall performance achieves. If we use this excitation pulse search method in AMR-WB, the complexity required for excitation codebook search can be reduced to half the original method while the output speech maintains equal speech quality to a conventional method.
Keywords
AMR-WB; ACELP; Speech Coder; Codebook Search Algorithm;
Citations & Related Records
연도 인용수 순위
  • Reference
1 ITU Radiocommunication Assembly, Document8/1045-E, 'Detailed Specifications of the Radio Interfaces of IMT-2000,' Document 8/126(Rev.1), April. 2000
2 Boudreau, D., Caire,G., Corazza, G.E., De Gaudenzi, R., Gallinaro, G., Luglio, M., Lyons, R., Romero Garcia, J., Vernucci, A., Widmer, H. 'Wide-band CDMA for the UMTS/IMT-2000 satellite component', Vehicular Technology, IEEE Transactions on, vol. 51 pp. 306-331, March 2002   DOI   ScienceOn
3 ISO/IEC JTC1/SC29/WG11 no.71, 'coding of Moving Pictures and Associated Audio for Digital Stroage Media at up to about 1.5 Mbit/s DC11172-3 (Part 3. MPEG Audio)'
4 ISO/JTC1/CS29/WG1 N2203, 'Committee Draft Interantional standard of ISO/IEC 14496-3', 1998
5 ITU-T Recommendation G.722.2, 'Wideband coding of speech at around 16kbit/s using adaptive multi-rate wideband(AMR-WB)', January 2002
6 3GPP TS 26.171, 'AMR Wideband Speech Codec ; General description'
7 3GPP TS 26.173, 'AMR Wideband Speech Codec ; ANSI-C code'
8 ETSI draft EN 301 704, 'Digital cellular telecommunication system;Adaptive Multi-Rate(AMR) speech transcoding'
9 Hochong Park, 'Efficient codebook search method ofr EVRC speech codec,' IEEE Signal Processing Letters, vol. 7, no. 1, 2000   DOI   ScienceOn
10 Nam Kyu Ha, 'A fast search method of algebraic codebook by reordering search sequence,' Proc. in ICASSP, 1999   DOI
11 ITU-T P.862 (2001), 'Perceptual evaluation of speech quality (PESQ) : An objective method for end-to-end speech quality assessment of narrow-band telephone networks and speech codecs'