Audio System and Method of Using Adaptive Intelligence to Distinguish Information Content of Audio Signals in Consumer Audio and Control Signal Processing Function

摘要

A consumer audio system has a signal processor coupled for receiving an audio signal. The audio signal is sampled into a plurality of frames. The sampled audio frames are separated into sub-frames according to the type or frequency content of the sound generating source. A time domain processor generates time domain parameters from the separated sub-frames. A frequency domain processor generates frequency domain parameters from the separated sub-frames. The time domain processor or frequency domain processor can detects onset of a note of the 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 separated sub-frames to a signature record of the signature database. The control parameters of the matching signature record control operation of the signal processor.