Loudspeaker device
US7058186B2 · kind B2 · utility
172Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2000 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Aug 28, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/002
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An anti-oscillation loudspeaker device where a reproduced sound is compensated based on a acoustic signal detected by a microphone and a reproduced band is enlarged is provided. In this loudspeaker device, a microphone is placed near a position where sound pressure of resonance occurring in a closed space for at least one of height, width, and depth of the inside of a cabinet is minimum. An influence of the resonance is restrained, a feedback circuit becomes stable, and a feedback amount increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.