-- by David Swink, February 2017
Note that, while I am a musician, I am not a music theorist, so I don't know which chord types (beyond major and minor keys) are truly useful. And while my chords are merely 3-tone, perhaps 4-tone would be nicer. How many octaves should represented for practical purposes? Are the "black key" chords all that useful? Anyone wishing to enlighten me and add value to the presentation may contact me at email@example.com.
|Octave4||Octave5||Major chord||Minor chord||Aug 5th||Dim 5th|
Caveat 2: I have not been able to find a list of tonal frequencies for use in the above table. Instead, I've created my own list empirically "by ear", which works for me on my browser and computer. Hopefully it will work for you as well.