Root mean square adaptive filtering for ambient noise compensation systems
US11095981B2 · kind B2 · utility
0Cited by
5References
20Claims
0Family size
Inventors
Key dates
| Filing date | Apr 17, 2020 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Apr 17, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/01
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus instantiating a method for computing automatic noise compensation gain with an adaptive filter that receives ambient sound and source audio, down samples ambient sound and source audio, and filters the down sampled ambient sound and source audio to compute an RMS noise estimate from which a gain is determined. The present invention features highly efficient computations, as sampling rates are significantly lower. The present invention keeps audio data secure by transmitting only the mean-square audio levels instead of the audio itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.