Coordinated ANR reference sound compression
US8315405B2 · kind B2 · utility
14Cited by
19References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2010 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Mar 12, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/01
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Apparatus and method of an ANR circuit providing both feedforward-based and feedback-based ANR, possibly of a personal ANR device, compressing both feedforward and feedback reference sounds detected by feedforward and feedback microphones, respectively, in response to the acoustic energy of the feedforward reference noise sound reaching a predetermined level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.