Name
Title | ||
|---|---|---|
8 kbit/s ACELP coding of speech with 10 ms speech-frame: a candidate for CCITT standardization |
Abstract | ||
|---|---|---|
A toll quality speech codec at 8 kbit/s with a 10 ms speech-frame currently under standardization by the CCITT is presented. The encoding algorithm is based on algebraic code-excited linear prediction (ACELP). Efficient pitch and codebook search strategies, along with efficient quantization procedures, have been developed to achieve toll quality encoded speech with a complexity implementable on current fixed-point DSP chips. Initial subjective tests showed that the codec quality is equivalent to that of G.726 ADPCM at 32 kbit/s in error-free conditions and it outperforms G.726 under error conditions. The codec can support a frame erasure rate up to 3% with slight degradation and performs adequately under tandeming conditions. The algorithm has been implemented on a single fixed-point DSP for the CCITT qualification test. It requires about 24 MIPS |
Year | DOI | Venue |
|---|---|---|
1994 | 10.1109/ICASSP.1994.389709 | Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference |
Keywords | Field | DocType |
algebraic codes,digital arithmetic,digital signal processing chips,linear predictive coding,quantisation (signal),speech codecs,speech coding,speech intelligibility,standardisation,10 ms,24 MIPS,32 kbit/s,8 kbit/s,ACELP,CCITT qualification test,CCITT standardization,G.726 ADPCM,algebraic code-excited linear prediction,codebook search,codec quality,encoding algorithm,error conditions,error-free conditions,fixed-point DSP,fixed-point DSP chips,frame erasure rate,pitch search,quantization,speech coding,speech frame,subjective tests,tandeming,toll quality encoded speech,toll quality speech codec | Speech coding,Adaptive Multi-Rate audio codec,Computer science,Speech recognition,Quantization (signal processing),Algebraic code-excited linear prediction,Linear predictive coding,Codec,Codebook,Intelligibility (communication) | Conference |
Volume | ISSN | ISBN |
ii | 1520-6149 | 0-7803-1775-0 |
Citations | PageRank | References |
7 | 2.33 | 1 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Redwan Salami | 1 | 7 | 2.33 |
| Claude Laflamme | 2 | 10 | 4.75 |
| J. Adoul | 3 | 290 | 63.42 |