Music Reference and Theory

More chord frequencies and harmonics

Continuing the work from last week, I've added some details to the chord detail pages showing harmonics that arise from playing the notes in a chord. These have frequencies listed as well as a description of the sharp/flat of each (compared to twelve-tone-equal-temperament).

I did remove one thing from last week that I wasn't entirely happy with. Amplitudes listed in the frequency graph are determined by the distance from the fundamental and also the realities of an acoustic-guitar and how it responds at certain frequencies.

I wasn't happy with the guitar compensation, so I've removed it for now. I'm going to try to measure how these respond on my guitar and use that as a more realistic model to use in my computations - I'll reimplement this at that point, but for now the frequency amplitudes will be a little less than realistic.

Examples:

• C major chord

Chord frequency analysis

This week I've added some visuals showing frequencies that sound when you play a given chord. I've got more coming around this, and I'm sure it'll change a bit over time, but in my research to capture notes (and some day chords) played for use in drills, this is something that I found to be interesting.

Each chord page gives a short summary of everything here, but this new visualization gives an idea of all the sounds involved in 3 simple notes. This may also be the start of some tooling to understand why certain notes might not play well with the harmonies that come along with each played fundamental.

Examples:

• C major chord