Audio playback method and apparatus using line array speaker unit
US8345883B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2006 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Jan 3, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S3/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-channel audio system is constituted using at least one line array speaker unit, in which plural speakers are arrayed in line, wherein the same audio signal is supplied with a prescribed delay time to each of the speakers, thus forming plural sound beams. The plural sound beams are reflected on a wall surface and a ceiling of a room so as to form plural virtual sound sources surrounding a listening position, and emission directions and intensities of the sound beams are controlled so as to localize a phantom at a prescribed position based on the plural virtual sound sources. By appropriately arranging plural line array speaker units horizontally, vertically, and slantingly in such a way that each line array speaker unit forms sound beams distributed and spread in a sectorial form, it is possible to realize a surround audio system having a high degree of freedom with regard to setup positions for forming virtual sound sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.