Peak Pro is a stereo audio editing, processing, and mastering application for the Macintosh from BIAS software (www.bias-inc.com)
Note: Peak Pro 5 does not support MIDI editing, but it is possible to route MIDI to any MIDI device or write it to a file using built-in MIDI recorder
Step-by-step instructions:
1. After starting Peak Pro you are invited to select audio file. Choose audio you want transcribe.
2. Select WIDI AU from "Plug-ins"->"Insert 1"->"Audio Units"->"WIDI"->"WIDI Audio To MIDI Audio Unit" menu:
3. In the WIDI AU window choose the option page, turn on midi to midi out option and select IAC Driver Bus as output.
You may also need to tune Recognition Parameters to achieve the best results.
You can also record MIDI events to a MIDI file with a built-in MIDI recorder. See routing MIDI for details.
Note: In this instruction it is supposed that Apple IAC Driver is activated on your system. If it is not true, refer to routing MIDI on how to activate it.