Low bit-rate audio coder using an M-band multiresolution filter bank

S. Boland; M. Deriche

doi:10.1049/el:19970182

Low bit-rate audio coder using an M-band multiresolution filter bank

S. Boland
, M. Deriche

Queensland University of Technology

Research output: Contribution to journal › Article › peer-review

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 78-91kbit/s with low computational load. It also achieved similar performance to the MPEG layer 2 coder at 128kbit/s.

Original language	English
Pages (from-to)	262-263
Number of pages	2
Journal	Electronics Letters
Volume	33
Issue number	4
DOIs	https://doi.org/10.1049/el:19970182
State	Published - 13 Feb 1997
Externally published	Yes

Keywords

Audio coding
Wavelet transforms

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10.1049/el:19970182

Cite this

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title = "Low bit-rate audio coder using an M-band multiresolution filter bank",

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 78-91kbit/s with low computational load. It also achieved similar performance to the MPEG layer 2 coder at 128kbit/s.",

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AB - 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 78-91kbit/s with low computational load. It also achieved similar performance to the MPEG layer 2 coder at 128kbit/s.

KW - Audio coding

KW - Wavelet transforms

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Low bit-rate audio coder using an M-band multiresolution filter bank

Abstract

Keywords

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