TY - GEN
T1 - A new approach to low bit rate audio coding using a combined harmonic-multiband-wavelet representation
AU - Deriche, Mohamed
AU - Ning, Daryl
AU - Boland, Simon
PY - 1999
Y1 - 1999
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/4544241233
U2 - 10.1109/ISSPA.1999.815745
DO - 10.1109/ISSPA.1999.815745
M3 - Conference contribution
AN - SCOPUS:4544241233
SN - 1864354518
SN - 9781864354515
T3 - ISSPA 1999 - Proceedings of the 5th International Symposium on Signal Processing and Its Applications
SP - 603
EP - 606
BT - ISSPA 1999 - Proceedings of the 5th International Symposium on Signal Processing and Its Applications
PB - IEEE Computer Society
T2 - 5th International Symposium on Signal Processing and Its Applications, ISSPA 1999
Y2 - 22 August 1999 through 25 August 1999
ER -