Name
Abstract | ||
|---|---|---|
In this paper we propose an extension of the very low bit-rate speech coding technique, exploiting predictability of the tempor al evolu- tion of spectral envelopes, for wide-band audio coding applications. Temporal envelopes in critically band-sized sub-bands are estimated using frequency domain linear prediction applied on relatively long time segments. The sub-band residual signals, which play an im- portant role in acquiring high quality reconstruction, are processed using a heterodyning-based signal analysis technique. For recon- struction, their optimal parameters are estimated using a c losed-loop analysis-by-synthesis technique driven by a perceptual model emu- lating simultaneous masking properties of the human auditory sys- tem. We discuss the advantages of the approach and show some properties on challenging audio recordings. The proposed technique is capable of encoding high quality, variable rate audio sig nals on bit-rates below 1bit/sample. |
Year | DOI | Venue |
|---|---|---|
2007 | 10.1109/ICASSP.2007.366667 | Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference |
Keywords | Field | DocType |
audio coding,audio recording,closed loop systems,frequency-domain analysis,speech coding,closed-loop analysis-by-synthesis technique,frequency-domain linear prediction,heterodyning-based signal analysis technique,human auditory system,perceptual model emulation,speech coding technique,subband residual signals,variable rate audio signals,wideband perceptual audio coding,Audio signal processing,Hilbert transform,data compression,linear predictive coding | Frequency domain,Signal processing,Audio signal,Speech coding,Pattern recognition,Computer science,Speech recognition,Artificial intelligence,Sub-band coding,Audio signal processing,Data compression,Linear predictive coding | Conference |
Volume | ISSN | ISBN |
1 | 1520-6149 | 1-4244-0727-3 |
Citations | PageRank | References |
2 | 0.41 | 4 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Petr Motlíček | 1 | 13 | 3.36 |
| Vijay Ullal | 2 | 2 | 0.41 |
| Hynek Hermansky | 3 | 3298 | 510.27 |