Patent ID: 7092534
Filing Date: 2006-08-15
Classification: H03F,H03G,H03M

Abstract:
1. A method for controlling pop noises in a sound broadcasting system, the method comprising: controllably connecting an output of a drive amplifier to a first predetermined low voltage Level though a first switch; inputting a first portion of an operation control data set to a digital-to-analog converter (DAC) circuit for driving an output thereof to a second predetermined low voltage level; and inputting a second portion of the operation control data set to the DAC circuit and further to the drive amplifier to bring the output of the drive amplifier to a common mode voltage level over a predetermined rise-up time period for controlling the pop noises, wherein the inputting the first portion of the operation control data set further includes disconnecting the first switch after a predetermined period of time after the output of the DAC circuit is driven to the second predetermined low voltage level.