Adaptive threshold algorithm for real-time wavelet de-noising applications
US6647252B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Mar 3, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/1036
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention is a method and system for extracting information from a received signal with minimal loss due to noise. The system comprises of a transformer, for correlating the received signal to a wavelet function and producing wavelet decomposition coefficients, and a threshold circuit, which is responsive to the received signal, for applying predetermined threshold values based on the type of signal. Also included in the system is a filter, coupled to the transformer and threshold circuit, for altering the wavelet decomposition coefficients produced by the transformer using threshold values applied by the threshold circuit to produce altered wavelet coefficients from which the received signal is reconstructed with reduced noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.