Chordec

$2.99

1.0.2for iPhone

Xiao Yixiang

Developer

May 20, 2013

Update Date

Music

Category

Age Rating

Apps in this category do not contain restricted content.

Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Chordec Screenshots

iPhone

About Chordec

Chordec does chord recognition for songs from your iOS device. It was originally developed by Weibin Shen and is now re-released. Its algorithm has the highest accuracy among published algorithms till at least the end of 2012.

Chord recognition accuracy under default Sensitivity value:
82% if counting only major and minor chords,
65% if counting only maj, min, aug, dim, 7, maj7 and min7

Chordec features a Sensitivity slider. It can change the sensitivity of the chord recognition model. Although the default value of this slider can return meaningful chord estimation results for majorities of the music out there, for some music, tweaking this value may return a better chord recognition result.

Special Thanks To:
Georgia Tech Center for Music Technology (GTCMT)
International Society for Music Information Retrieval (ISMIR)