Title :
Subband coding of high-fidelity quality audio signals at 128 kbps
Author :
Teh, Do-Hui ; Tan, Ah-Peng ; Koh, Soo-Ngee
Author_Institution :
Asia Matsushita Electric S Pte Ltd., Singapore
Abstract :
The design and performance of a 24-band subband coder for the encoding of high-fidelity quality 20 kHz audio signals at 128 kb/s are considered. The slightly different performances of the subband coder using two different adaptive bit allocation algorithms, namely the modified Ramstad algorithm and the algorithm based on noise masking threshold, are discussed and compared in terms of segmental signal-to-noise ratio, mask-to-noise ratio, and the probability of noise measures
Keywords :
Hi-Fi equipment; audio signals; encoding; 128 kbit/s; 20 kHz; 24-band subband coder; VLF; adaptive bit allocation algorithms; encoding; high-fidelity quality audio signals; mask-to-noise ratio; modified Ramstad algorithm; noise masking threshold; probability of noise measures; segmental signal-to-noise ratio; Asia; Audio coding; Bit rate; Decoding; Ear; Encoding; Filter bank; Psychoacoustic models; Quantization; Signal to noise ratio;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0532-9
DOI :
10.1109/ICASSP.1992.226086
