[normcoreashore]

Such a good point about needing to feel it.

For intuitive interval training you can try this app (I built).

https://harmonyoscillators.brianfogg.com/

Essentially it’s two tunable sine wave oscillators and a simple waveform visualizer. you can manually tune the oscillators to any interval, gradually slide things in/out of tune, select intervals from from scales and see the mathematical calculations generated by various tunings. You can also run it in binaural mode (pure tone in each ear).

When I was teaching piano and music theory I used this tool to help students practice active listening for beat frequency and harmony. Maybe it can be useful to some of you.

[rreichel03]

Wow I just played with this for a while - I've never had the opportunity to see and hear the waves at the same time and really enjoyed it. It was really neat getting the frequencies close in binaural mode and hearing the pulsing of the phases being slightly off. Thanks for sharing!

[normcoreashore]

Absolutely!