Apparatus and method for generating filter characteristics
US9066191B2 · kind B2 · utility
6Cited by
2References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 9, 2009 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Sep 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for generating filter characteristics for filters connectible to at least three loudspeakers at defined locations with respect to a sound reproduction zone includes an impulse response reverser for time-reversing impulse responses associated to the loudspeakers to obtain time-reversed impulse responses. The apparatus furthermore includes an impulse response modifier for modifying the impulse responses or the time-reversed impulse responses such that impulse response portions occurring before a maximum of a time-reversed impulse response are reduced in amplitude to obtain the filter characteristics for the filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.