TY - GEN
T1 - Embedded WI coding between 2.0 and 4.8 kbit/s
AU - Kang, Hong Goo
AU - Sen, D.
N1 - Publisher Copyright:
© 1999 IEEE.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 1999
Y1 - 1999
N2 - This paper describes an embedded speech coder based on waveform interpolation (WI) techniques. Since the quantization of line spectral frequency (LSF) parameters is fairly orthogonal to the quantization of excitation information, designing an embedded system with WI is much easier than that of other approaches. By using a hierarchical bit-allocation of excitation signals that consist of a slowly evolving waveform (SEW) and a rapidly evolving waveform (REW), the proposed system works well at the bit-rate of 2.0, 2.4, 3.0, 4.0 and 4.8 kbit/s. Listening tests indicate that the performance of the new system is comparable to an optimized fixed-rate WI coder, and the quality degrades gracefully as the bit-rate decreases.
AB - This paper describes an embedded speech coder based on waveform interpolation (WI) techniques. Since the quantization of line spectral frequency (LSF) parameters is fairly orthogonal to the quantization of excitation information, designing an embedded system with WI is much easier than that of other approaches. By using a hierarchical bit-allocation of excitation signals that consist of a slowly evolving waveform (SEW) and a rapidly evolving waveform (REW), the proposed system works well at the bit-rate of 2.0, 2.4, 3.0, 4.0 and 4.8 kbit/s. Listening tests indicate that the performance of the new system is comparable to an optimized fixed-rate WI coder, and the quality degrades gracefully as the bit-rate decreases.
UR - http://www.scopus.com/inward/record.url?scp=85009198358&partnerID=8YFLogxK
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U2 - 10.1109/SCFT.1999.781493
DO - 10.1109/SCFT.1999.781493
M3 - Conference contribution
AN - SCOPUS:85009198358
T3 - 1999 IEEE Workshop on Speech Coding: Model, Coders, and Error Criteria, Proceedings
SP - 87
EP - 89
BT - 1999 IEEE Workshop on Speech Coding
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 6th IEEE Workshop on Speech Coding
Y2 - 20 June 1999 through 23 June 1999
ER -