Method and system for audio filtering
US8014541B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2005 |
| Grant date | Sep 6, 2011 |
| Priority date | — |
| Expiry date | Jul 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/0211
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system and method for graphic equalization of audio signals is disclosed. Traditional graphic equalizers provide control over the gains in each of a set of frequency bands. However, the actual band gains vary from the desired gains due to crosstalk between bands. Prior art methods for addressing this difficulty include applying a correction filter to the equalizer, and adjusting the shape of the individual band filters, both of which increase the computational cost. In an embodiment of the present invention, the input gains are processed to produce a set of adjusted gains which take into account the crosstalk, and result in an equalization interpolating the input band gains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.