Audio transient suppression circuits and methods
US6600365B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 16, 2002 |
| Grant date | Jul 29, 2003 |
| Priority date | — |
| Expiry date | May 16, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/305
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Audio transient suppression circuit (300) has two modes, a first, for example active mode in which the circuit operates to provide an audio signal output and a second, for example standby mode in which said audio signal output is suppressed. The circuit comprises at least one active signal processing stage having an output node (128), the output node having a dc signal path to a first dc voltage (104), said dc signal path including at least one first resistive element (122, 124). The circuit further comprises an output signal transient suppresser, said transient suppresser comprising a second resistive element (304) switchably connected (302) between a second dc voltage (102) and said output node. The second resistive element has a resistance selected such that when said second resistive element is connected the voltage on said output node in said second mode is substantially equal to a quiescent voltage on said output node in said first mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.