Noise suppressing apparatus and its adjusting apparatus
US5335312A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1992 |
| Grant date | Aug 2, 1994 |
| Priority date | — |
| Expiry date | Sep 4, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The adjustment of a noise suppressing apparatus inputs the voice signal with the noises being piled up in it to decide the weight coefficient of the neutral network 130 with a back propagating method so that the errors of the output signal and of the noiseless signal may become minimum, the noise suppressing apparatus where noises in a voice signal are suppressed even in a situation where the positional relation between the noise source and the voice source may often change, and noises offensive to the voice after the noise suppression may not remain, the suppressing effect is not deteriorated even if the time pattern of the input signal is varied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.