Method and system for frequency domain active matrix decoding without feedback
US8787585B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 12, 2010 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Aug 29, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A perceptually motivated, frequency domain active matrix decoder and decoding method which decodes N audio input signals to generate M audio output signals, where M is greater than N, including by generating M streams of output frequency components which determine the audio output signals, in response to N streams of input frequency components indicative of the audio input signals, determining power ratios from the input frequency components without use of feedback, including at least one power ratio for each critical frequency band in a set of critical frequency bands, and determining gain control values for each of the critical frequency bands from the power ratios including by shaping the power ratios in nonlinear fashion without use of feedback. An active matrix element is steered using the gain control values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.