WIDI Recognition System Standard - Version 4.03 WIDI Recognition System is a polyphonic Audio to MIDI t ranscriber. The program recognizes CD tracks, MP3 and W ave files and automatically produces polyphonic M IDI files in several seconds. In addition, WIDI Recogni tion System is capable of converting music on the fly, as you sing or play a musical instrument. WIDI 's innovative recognition algorithms guarantee the best conversion quality ever available. WIDI is design ed for retri e ving music notation from Audio files, practicing or t eaching music, creating ringtones for cell phone