Dynamic output level correction by monitoring speaker distortion to minimize distortion
US10333482B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2018 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Feb 4, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R29/001
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A speaker system featuring automatic volume adjustment to avoid excess distortion includes a first converter for converting an input signal to an input frequency domain signal; and a second converter for converting a microphone signal to an environmental frequency domain signal. A distortion analyzer receives output of the first and second converter and determines at least one distortion level and provides at least one gain adjustment signal used to control a corrector to adjust gain of a speaker driver. The system performs a method of reducing distortion by automatically adjusting volume in each of a plurality of frequency bands including converting an input signal to a frequency domain input signal; converting a microphone signal to an environmental frequency domain signal; determining a distortion level; generating a gain adjustment signal; and adjusting gain of a signal provided to a speaker driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.