Loudness level control for audio reception and decoding equipment
US9430185B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 2014 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Aug 20, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/01
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The application discusses a computer implemented method and apparatus for performing audio equalization in an audio receiver device, such as an integrated receiver/decoder or set top box, or integrated TV, connected to one or more audio playback devices, such as a television unit, computer screen and speakers, amplifier or home theater equipment. The method and apparatus use an equalization process which compares audio signals received in different audio formats (e.g. MPEG-1 Layer II, AC-3 2.0, AC-3 5.1 and HE-AAC) with one another, allowing a correction gain factor to be determined for equalizing the perceived loudness of the signals when played-back at a connected playback device. The correction gain factor is then applied in the audio receiver device before output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.