Title :
A low delay sub-band audio coder (20 Hz-15 kHz) at 64 kbit/s
Author :
Hay, K. ; Mainard, L. ; Saoudi, S.
Author_Institution :
ENST de Bretagne, Brest, France
Abstract :
a new method for coding generic audio signals at 64 kbit/s in the bandwidth 20-15000 Hz with a low delay is presented. It combines sub-band coding, low delay CELP algorithm and cascaded filterbanks. We show how the different parameters of LD-CELP can be adapted to achieve a better quality, perceptual coding techniques are integrated into the encoder for allocating bits to each sub-band
Keywords :
audio coding; audio signals; band-pass filters; delays; filtering theory; linear predictive coding; 20 Hz to 15 kHz; 64 kbit/s; LD-CELP; audio signal coding; bandwidth; cascaded filterbanks; encoder; low delay CELP algorithm; low delay subband audio coder; perceptual coding; subband coding; Bandwidth; Bit rate; Decoding; Delay; Filters; Linear predictive coding; Psychoacoustic models; Psychology; Sampling methods; Speech coding;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1996., Proceedings of the IEEE-SP International Symposium on
Conference_Location :
Paris
Print_ISBN :
0-7803-3512-0
DOI :
10.1109/TFSA.1996.547464
