Circuit and method of preventing audio pop in an electronic audio device
US6157726A · kind A · utility
32Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1997 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Dec 5, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/348
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit connected between an audio signal receiver and an audio output unit can prevent an audio pop from being emitted by a speaker associated with the audio output unit. The circuit interrupts the output of the signal receiver when the DC voltage level of the system suddenly changes, e.g. when a different audio signal is selected or when the receiver is powered on or off. The output of the receiver is shunted through a resistor to ground until a blocking capacitor between the receiver and audio output unit can charge to the new DC voltage level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.