Audio system, electronic device and car audio system
US8452029B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2009 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Jan 21, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/082
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An audio system including an inverter, a first amplifier, a first mixer, a main speaker, and a first audio output port is provided. The inverter receives a first audio signal and inverts the first audio signal into an inverted audio signal. The first amplifier receives the inverted audio signal from the inverter and multiplies the inverted audio signal by a first gain to generate a first compensating audio signal. The first mixer receives a second audio signal and mixes the first compensating audio signal with the second audio signal to generate a first low-interference audio signal. The main speaker receives and plays the first audio signal. The first audio output port receives the first low-interference audio signal from the first mixer and transmits the first low-interference audio signal to a first external speaker. An electronic device and a car audio system capable of generating the low-interference audio signal are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.