Loudspeaker phase distortion control using velocity feedback
US5771300A · kind A · utility
5Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1996 |
| Grant date | Jun 23, 1998 |
| Priority date | — |
| Expiry date | Sep 25, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3212
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The velocity of the integral speaker coil and cone of the canceling loudspeaker of an ANC system corresponds to the sound being produced by the canceling loudspeaker. By sensing the velocity of the speaker coil/cone and comparing the sensed velocity to the driving signal from the controller, the response time and distances can be shortened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.