Speaker array apparatus and signal processing method therefor
US8363845B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2008 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Nov 1, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker array apparatus capable of performing directivity control with ease even when sound emission is performed based on audio signals of different frequency ranges. The speaker array apparatus includes a speaker unit for emitting high-frequency range sound, and another speaker unit for emitting low- and high-frequency range sound. A signal processed by a high pass filter is used for generation of both audio signals used by these speaker units to emit the high-frequency range sounds. Since both the audio signals are rotated in phase similarly to each other, the phases of audio signals supplied to both the speaker units are in coincidence with each other in high-frequency range, which makes it easy to carry out directivity control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.