Matrix decomposition structure of two-channel quadrature mirror filter bank and coefficient design method thereof
US12375066B1 · kind B1 · utility
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Key dates
| Filing date | Jan 17, 2025 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Jan 17, 2045 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/0266
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A matrix decomposition structure of a two-channel quadrature mirror filter bank, including an analysis filter part, a synthesis filter part, the filter part includes an E0,M module, an X module, a Y module, a Z module, an input port and an output port. The X module takes a value of the input port as an input of a multiplier, and the E0,M module delays the input. An output of the Xmodule passes through the Y module and then is used as an input of the Z module, and outputs of the Z module and the E0,M module are added and then output from the output port, and pass through a middle part to enter the synthesis filter part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.