Processing an audio signal
US8295508B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2010 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Dec 4, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/03
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for processing an audio signal to enhance the perceived lower frequency content of the audio signal when played through an audio output device, includes an input configured to receive an audio input signal, a processor configured to filter the audio input signal to produce a high frequency signal and a low frequency signal, generate an enhancement signal by producing higher frequency harmonics from the low frequency signal, including a process of self convolution, and combine the high frequency signal with the enhancement signal to produce an output signal; and an output configured to receive the output signal and produce an audio output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.