Headphone with active noise cancelling and auto-calibration method thereof
US9197178B2 · kind B2 · utility
1Cited by
1References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 8, 2014 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Jul 3, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/01
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A headphone with active noise cancelling and auto-calibration method thereof is disclosed. The headphone includes a first gain-amplifier, an active noise cancelling module, a speaker, a measurement circuit, a calibration control circuit and USB driving circuit. Auto-calibration of the headphone is by use of a USB interface in the instant disclosure, so as to significantly reduce calibration time and then improve production efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.