Name
Title | ||
|---|---|---|
Single and double frame coding of speech LPC parameters using a lattice-based quantization scheme |
Abstract | ||
|---|---|---|
A lattice-based scheme for the single-frame and the double-frame quantization of the speech line spectral frequency parameters is proposed. The lattice structure provides a low-complexity vector quantization framework, which is implemented using a trellis structure. In the single-frame scheme, the intraframe dependencies are exploited using a linear predictor. In the double-frame scheme, the parameters of two consecutive frames are jointly quantized and hence the interframe dependencies are also exploited. A switched scheme is also considered in which, lattice-based double-frame and single-frame quantization is performed for each two frame and the one which results in a lower distortion is chosen. Comparisons to the Split-VQ, the Multi-Stage VQ, the Trellis Coded Quantization, the interframe Block-Based Trellis Quantizer, and the interframe scheme used in IS-641 EFRC and the GSM AMR codec are provided. These results demonstrate the effectiveness of the proposed lattice-based quantization schemes, while maintaining a very low complexity. Finally, the issue of the robustness to channel errors is investigated |
Year | DOI | Venue |
|---|---|---|
2006 | 10.1109/TSA.2005.858560 | IEEE Transactions on Audio, Speech & Language Processing |
Keywords | Field | DocType |
interframe coding,intraframe coding,speech coding.,lattice-based scheme,interframe dependency,double-frame quantization,speech lpc parameter,double frame,single-frame quantization,low-complexity vector quantization framework,quantization,proposed lattice-based quantization scheme,lat- tice-based quantization,double-frame scheme,lpc,lsf,lattice-based double-frame,single-frame scheme,index terms—celp,interframe scheme,indexing terms,vector quantization,celp,linear predictive coding,speech coding,information technology,linear predictor | Speech coding,Code-excited linear prediction,Computer science,Adaptive Multi-Rate audio codec,Speech recognition,Vector quantization,Quantization (physics),Trellis quantization,Quantization (signal processing),Linear predictive coding | Journal |
Volume | Issue | ISSN |
14 | 5 | 1558-7916 |
Citations | PageRank | References |
0 | 0.34 | 19 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Lahouti, F. | 1 | 133 | 11.22 |
| A. R. Fazel | 2 | 0 | 0.34 |
| A. H. Safavi-Naeini | 3 | 0 | 0.34 |
| A. K. Khandani | 4 | 297 | 19.65 |