Circuit for reducing pulse noise caused at switching of an analog audio processing circuit
US7519190B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2005 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Nov 1, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G1/0088
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A noise reduction circuit for reducing pulse noise caused at switching of an analog audio processing circuit comprises a voltage division resistor circuit, an end of the voltage division resistor circuit being electrically connected to an output end of a switching circuit of the analog audio processing circuit, and another end of the voltage division resistor circuit being electrically connected to a reference voltage; a plurality of voltage-division points of the voltage division resistor circuit are connected respectively with a plurality of controllable switches, while other ends of the plurality of controllable switches are connected together to form an output end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.