In accordance with an embodiment, a system for processing an incoming signal for audio application includes a parameter extraction module coupled for receiving an incoming signal having a first frequency that is configured to extract at least one parameter from the incoming signal. The system includes at least one oscillator and at least one processing engine processing that receives a clock signal from the at least one oscillator. In accordance with another embodiment, a method is provided that performs a first processing with the clock signal and generates an oscillator control signal for adjusting the frequency of the clock from the oscillator adaptively depending on parameters of the incoming signal extracted or analyzed in the first processing.