Abstract
In this paper we investigate multiresolution source coding of high quality digital audio using Perfect Reconstruction (PR) M-band filter banks. The time-frequency decomposition in the proposed coder consists of a three stage cascade of multi-channel filter banks. This representation enables a very close approximation to the critical band divisions with superior frequency selectivity compared to two-channel Quadrature Mirror Filter (QMF) Wavelet Packets. It also provides a variable time resolution which is advantageous for coding non-stationary or `transient-like' sources. The proposed coder provides very good quality down to and under 2 bits/sample for single-channel Compact Disk (CD) audio.
| Original language | English |
|---|---|
| Pages | 93-96 |
| Number of pages | 4 |
| State | Published - 1996 |
| Externally published | Yes |
| Event | Proceedings of the 1996 4th International Symposium on Signal Processing and its Applications, ISSPA'96. Part 2 (of 2) - Gold Coast, Aust Duration: 25 Aug 1996 → 30 Aug 1996 |
Conference
| Conference | Proceedings of the 1996 4th International Symposium on Signal Processing and its Applications, ISSPA'96. Part 2 (of 2) |
|---|---|
| City | Gold Coast, Aust |
| Period | 25/08/96 → 30/08/96 |
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