DocumentCode
1543329
Title
Low bit-rate audio coder using an M-band multiresolution filter bank
Author
Boland, S. ; Deriche, M.
Author_Institution
Signal Processing Res. Centre, Queensland Univ. of Technol., Brisbane, Qld., Australia
Volume
33
Issue
4
fYear
1997
fDate
2/13/1997 12:00:00 AM
Firstpage
262
Lastpage
263
Abstract
A new audio coding system is proposed. Using an M-band multiresolution filter bank technique. This consists of a cascade of 4-band and 8-band filter banks. Experiments with a complete audio coding system were carried out with the proposed filter bank, masking model, bit allocation algorithm, scalar quantisation and Huffman coding. For the broadband signals tested, the proposed system resulted in near transparent quality at bit-rates of 78-91 kbit/s with low computational load. It also achieved similar performance to the MPEG layer 2 coder at 128 kbit/s
Keywords
Huffman codes; audio coding; filtering theory; quantisation (signal); 128 kbit/s; 78 to 91 kbit/s; Huffman coding; M-band multiresolution filter bank; audio coder; bit allocation algorithm; bit rate; computational load; masking model; scalar quantisation; transparent quality;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19970182
Filename
583462
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