Hybrid permanent/reversible dynamic range control system
US8355909B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2012 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Jun 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G9/005
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system for controlling dynamic range of an audio signal comprises an automatic gain control element that receives an input signal having a varying level and outputs a control signal that varies based on the varying level of the input signal and a modified input signal having a dynamic range different than a dynamic range of the input signal. The system also comprises an inverter that inverts the control signal or a block-based control signal corresponding to the control signal in block format. The system also comprises a variable gain element that receives the modified input signal and at least some of the inverted control signal or block-based control signal. The variable gain element also outputs a remainder signal corresponding to the modified input signal as unmodified based on the at least some of the inverted control signal or block-based control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.