Audio system
US8520862B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2009 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Jan 31, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S3/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audio system for enhancing localization of sound perceived by a listener in a listening position includes two loudspeakers and a signal processing unit. The loudspeakers are arranged distant from each other and from the listening position. The sound is transmitted from each of the loudspeakers to the listening position according to a respective transfer function. The transfer functions have different phase responses over frequency. The signal processing unit is connected upstream of the loudspeakers and receives two electrical input signals to be radiated as respective sound signals by the two loudspeakers. The signal processing unit includes a phase shifter unit that phase-shifts at least one of the electrical input signals such that a difference in phase responses is constant over a substantial portion of the human audible frequency in a frequency band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.