Transformer noise suppression method
US10083709B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 15, 2015 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | Jan 15, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2410/05
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The noise suppression method of individual active noise reduction system comprises the steps that: (1) initial noise digital signals are received and converted to serve as input signals of a BP neural network; (2) the input signals are processed to generate secondary digital signals; (3) the secondary digital signals are output to a loudspeaker and secondary noise is generated; (4) remained noise digital signals obtained by overlapping the initial noise and the secondary noise are received; whether remained noise digital signals is continuously constant for the set times is judged; if yes, the secondary digital signals are kept outputting; (5) if not, BP neural network parameters are optimized and adjusted with the amplitude of the remained noise digital signals being minimum as the optimality principle; remained noise digital signals of previous step are served as new input signals and the step (2) is executed again.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.