Referenced Items are not available for this document.
In this paper, we present updated results for the combined harmonic-wavelet based audio coder. This coder first approximates the audio frame as a sum of several sinusoids using a harmonic analysis-synthesis scheme. The reconstructed harmonic signal is then subtracted from the original to give a residual, which is analysed using a wavelet filtering scheme. After each step (harmonic analysis and wavelet filtering), the perceptually relevant parameters are quantised and encoded. The total least squares (TLS)-Prony algorithm is used for the harmonic analysis scheme, and cascaded M-band wavelet transforms are used for analysing the residual. At encoding bit rates of 60-70 kbit/s, this audio coder is capable of delivering better results than the MPEG layer II audio coder operating at the much higher bit rate of 128 kbit/s
Published in:
Signal Processing and Its Applications, 1999. ISSPA '99. Proceedings of the Fifth International Symposium on
(Volume:2
)
Date of Conference: 1999
- Page(s):
- 603 - 606 vol.2
- Meeting Date :
- 22 Aug 1999-25 Aug 1999
- Print ISBN:
- 1-86435-451-8
- INSPEC Accession Number:
- 6544414
- Conference Location :
- Brisbane, Qld.
- Digital Object Identifier :
- 10.1109/ISSPA.1999.815745
- Product Type:
- Conference Publications
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