Audio system and method of using adaptive intelligence to distinguish information content of audio signals and control signal processing function

摘要

An audio system has a signal processor coupled for receiving an audio signal from a musical instrument or vocals. A time domain processor receives the audio signal and generates time domain parameters of the audio signal. A frequency domain processor receives the audio signal and generates frequency domain parameters of the audio signal. The audio signal is sampled and the time domain processor and frequency domain processor operate on a plurality of frames of the sampled audio signal. The time domain processor detects onset of a note of the sampled audio signal. A signature database has signature records each having time domain parameters and frequency domain parameters and control parameters. A recognition detector matches the time domain parameters and frequency domain parameters of the audio signal to a signature record of the signature database. The control parameters of the matching signature record control operation of the signal processor.