Speaker distortion reduction
US10225654B1 · kind B1 · utility
3Cited by
1References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2017 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Sep 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A spectral tilt of an audio signal is used to determine whether a speaker will introduce perceptible distortion during playback of the audio signal. The spectral tilt may be indicated by determining a ratio between energy in a distortion-producing frequency band and energy in a distortion-masking frequency band. Based on the determined spectral tilt, the distortion-producing frequency band may be attenuated to reduce the distortion introduced by the speaker. Additionally, the distortion-masking frequency band may be amplified to reduce perceptibility of the distortion produced by the speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.