Methods and apparatus for improving audio quality using an acoustic leak compensation system in a mobile device
US9148725B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2013 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Jan 25, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Techniques for use in improving audio quality with use of an acoustic leak compensation (ALC) system in a mobile device are described. The mobile device includes a receiver and a microphone which is acoustically coupled to the receiver. A change in a signal power of signals received at the microphone is detected. In response to the detecting, a probe signal is enabled, and a frequency response between the receiver and the microphone is estimated using the probe signal as an input. Filter coefficients of a filter are calculated based on the estimated frequency response, and the calculated filter coefficients are applied to the filter. The filter type may be selected from a plurality of filter types based on an estimated signal-to-noise ratio (SNR) of the microphone signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.