Chord Tracker vs Chord Detector

The Yamaha Chord Tracker app for iPhone/iPod touch/iPad helps you practice and perform songs by 　analyzing the audio songs stored in your iOS device and then displaying the chord symbols for you. ■Features Chord Tracker analyzes the audio songs stored in your iOS device's music library and then displays the song's chords on the screen, allowing you to play your favorite songs. And now, with both graphical piano keyboard and guitar tab display options, Chord Tracker is even more powerful. ■Note 1. The chords displayed by this application will match the mood of the original song very closely, but may not be an exact match for the original chords used. 2. Chord Tracker will not work for songs in iCloud or protected by DRM (Digital Rights Management). 3. Chord Tracker will not work with Music Streaming services such as Apple Music.

Chord Detector is closer to science than just an app. It is an experimental music recognition method that I have made according to my understanding about the mechanics of sound perception. The app is real time chord tracker that uses the microphone of the device. The found chords are displayed with big letters on the screen but you can also see individual music tones with small letters at the bottom. MIDI recording is an experimental feature. I do not know of any 100% successful audio to MIDI converter yet but this one I have made works relatively good for solo instruments. However full songs with drums and noises are not so good :) Audio to MIDI conversion is also real time so some tones may be missed because the CPU may not catch up (depends on the device) At the moment chord detection is limited to major, minor, 5th and 7th chords.