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Multiplierless 2-band perfect reconstruction quadrature mirror filter (PR-QMF) banks
N J I T
posted on 06/30/2009
The Multiplierless Quadrature Mirror Filter concept is used in the design of analysis and synthesis filter banks to be used for the sub-band coding of various types of signals. The individual filters in the analysis and synthesis filter banks are designed to be near linear in phase, non-symmetrical in time, and to have equal bandwidth frequency responses. These multiplierless filters are relatively easy to implement in hardware and allow for the sub-band coding of signals with minimal computational complexity so as to result perfect signal reconstruction. Furthermore, these filters are particularly well suited for configuration in hierarchical sub-band structures.
File Number: 93-009
Other Information:
375/350; 375/240;
375/229; 348/398
| Patent Number(s): | 5420891 |
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Principal Investigator:
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Ali Akansu
Innovations (1) |
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Case Manager:
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Office of Technology Development
Innovations (49) |
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