Patent ID: 7627130

Claim:
A circuit for processing broadcast signals, comprising: first circuitry for receiving a broadcast signal and processing the broadcast signal to extract and output a first audio signal; an attenuator for receiving the first audio signal and attenuating the first audio signal based upon a first control signal to generate a second audio signal; second circuitry for receiving the second audio signal and one of attenuating and amplifying the second audio signal based upon a second control signal to generate a third audio signal; and feedback circuitry for generating the first control signal based upon the second audio signal, the feedback circuitry including third circuitry for receiving the second audio signal and determining a Root Mean Square (RMS) value of the second audio signal and providing an output signal based upon the RMS value, and a comparator for receiving the output signal and comparing the output signal with at least one reference signal to generate the first control signal.