Title :
Subband coding with modified multipulse LPC for high quality audio
Author :
Lin, Xiao ; Steele, Raymond
Author_Institution :
Dept. of Electron. & Comput. Sci., Southampton Univ., UK
Abstract :
A modified multipulse excitation linear predictive coding (MMPLPC) structure combined with a subband (SB) technique is proposed to encode audio signals of 15-kHz bandwidth. The bit allocation is dynamically adapted according to both the signal power in different subbands and a perceptual hearing model. Informal listening tests showed that high fidelity audio coding can be achieved at bit rates of less than 86 kbit/s by SB-MMPLPC.<>
Keywords :
Hi-Fi equipment; audio signals; digital signals; hearing; linear predictive coding; physiological models; audio signals; bit allocation; high fidelity audio coding; linear predictive coding; listening tests; modified multipulse LPC; perceptual hearing model; subbands;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1993. ICASSP-93., 1993 IEEE International Conference on
Conference_Location :
Minneapolis, MN, USA
Print_ISBN :
0-7803-7402-9
DOI :
10.1109/ICASSP.1993.319090
