Method and apparatus for audio signal processing

This invention relates in general to controlling audio anomalies and in particular to controlling audio anomalies in signals which have an auxiliary audio signal or dual language audio signal adjacent to a main audio signal. The method, apparatus, and system for controlling audio anomalies by using a mute switch to prevent output of an auxiliary audio signal in a television signal with an auxiliary audio signal , such as a NICAM audio signal or dual language audio signal, adjacent to a first audio signal . The mute switch operation is a function of the type of receiver receiving television signal and a function of verifying the presence of an auxiliary audio signal in television signal . The present invention controls audio anomalies such as audio whistle and audio pop.