Active attenuation system with specified output acoustic wave
US5172416A · kind A · utility
26Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1990 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Nov 14, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/51
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An active acoustic attenuation system specifies the error signal (44) to correspondingly specify the output acoustic wave. In the preferred embodiment, the error signal (44) is specified by summing (210) the error signal (44) with a desired signal (204) to provide a specified error signal (206) to the error input (202) of the adaptive filter model (40) such that the model (40) outputs the correction signal (46) to the output transducer (14) to introduce the canceling acoustic wave which specifies the output acoustic wave such that a desired signal is present in the output acoustic wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.