Signal processing device for cancelling noise in a signal

摘要

A frequency analysis system for eliminating noise from an information signal. The system receives an input signal containing noise, and discriminates an information signal from the noise in the input signal. The system then uses the detected noise to cancel noise in the input signal. In one embodiment, the system builds a history of noise information based upon prior detected noise in the signal, and uses this history to predict current noise in the signal.