WIDI Recognition System is a polyphonic Audio to MIDI converter with extended options. The main function of the program is to convert audio files into MIDI, and then to help with quick and efficient rearrangement of the converted file. The program converts CD tracks, MP3 and Wave files and automatically produces polyphonic MIDI files in seconds. In addition, WIDI Recognition System is capable of converting music on the fly, as you sing or play a musical instrument. WIDIs innovative recognition algorithms guarantee the best conversion quality ever available.

WIDI is designed for retrieving music notation from MP3 files, creating ringtones for cell phones, practicing or teaching music.

TrueTone Editor is the tool in the WIDI Recognition System Professional Edition that allows user to correct the results of automatic recognition with a visual comparison of spectrogram peaks to the notes. Users possess the options of adding and deleting musical notes, adjusting pitch and duration, and enabling playback, including synchronized play with the source audio file. Now, to enhance score readability, the TrueTone Editor in v3.2 manages bar-lines for easy positioning, addition or deletion in visual mode, or one can use the Tapping Tool, arranging bar-lines by ear. The new Editor also features time-saving functions such as Multiple Selection, so the attributes of a group of notes can be adjusted all at once, and Note Map, for fast navigation.