Artificial ambiance processing system
US7860590B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 12, 2006 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Oct 28, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2210/281
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method simulates more accurately the natural statistics of a physical reverberation process. A new filter design is provided having a comb shaped group delay. Gain minimums at a plurality of frequencies are combined with a delay line to create a constant reverberation time independent of frequency while allowing for temporal spreading. In addition, the connection topology between the plurality of energy transmission networks is temporally randomized to facilitate energy distribution within the reverberation apparatus. Both the temporal and spectral responses are actively changed on each iteration of the energy recirculation. By making the response have a high echo density and a lack of spectral coloration in the decay, the illusion of a natural process is enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.