Method and apparatus for processing audio signal
US9131297B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2012 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Jun 23, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/1041
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided are an audio signal processing apparatus and method. The audio signal processing apparatus includes: a sensing unit for sensing an impedance value of a headphone and adjusting a gain to be applied to an audio signal based on the sensed impedance value; and an amplifier for generating an output audio signal by receiving at least one bias voltage corresponding to the adjusted gain and amplifying the input audio signal according to the adjusted gain. The audio signal processing apparatus is capable of appropriately adjusting the magnitude of an acoustic signal output from a headphone, according to the product specifications of the headphone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.