Abstract
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.
| Original language | English |
|---|---|
| Title of host publication | 1999 IEEE Workshop on Speech Coding |
| Subtitle of host publication | Model, Coders, and Error Criteria, Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 87-89 |
| Number of pages | 3 |
| ISBN (Electronic) | 0780356519, 9780780356511 |
| DOIs | |
| Publication status | Published - 1999 Jan 1 |
| Event | 6th IEEE Workshop on Speech Coding - Porvoo, Finland Duration: 1999 Jun 20 → 1999 Jun 23 |
Other
| Other | 6th IEEE Workshop on Speech Coding |
|---|---|
| Country | Finland |
| City | Porvoo |
| Period | 99/6/20 → 99/6/23 |
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All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Signal Processing
Cite this
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Embedded WI coding between 2.0 and 4.8 kbit/s. / Kang, Hong Goo; Sen, D.
1999 IEEE Workshop on Speech Coding: Model, Coders, and Error Criteria, Proceedings. Institute of Electrical and Electronics Engineers Inc., 1999. p. 87-89 781493.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Embedded WI coding between 2.0 and 4.8 kbit/s
AU - Kang, Hong Goo
AU - Sen, D.
PY - 1999/1/1
Y1 - 1999/1/1
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
UR - http://www.scopus.com/inward/citedby.url?scp=85009198358&partnerID=8YFLogxK
U2 - 10.1109/SCFT.1999.781493
DO - 10.1109/SCFT.1999.781493
M3 - Conference contribution
SP - 87
EP - 89
BT - 1999 IEEE Workshop on Speech Coding
PB - Institute of Electrical and Electronics Engineers Inc.
ER -