Amplifier capable of controlling cut-off frequency in real time and amplification method for controlling cut-off frequency in real time
US9414163B2 · kind B2 · utility
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2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2014 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Dec 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/007
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier and an amplification method are provided. In accordance with the present invention, a cut-off frequency of variable high-pass filter is dynamically adjusted in real time according to a low frequency level of an input audio signal to prevent a distortion of the audio signal and damage of loudspeaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.