Not strictly the Moon but...
I was listening to a programme on Radio 4 about rhythms, and
they used the orbits of the planets as a musical rhythm, so I decided to do the
same using an oscillator synthesizer.
I adapted my old synthesizer written in HTML and javascript
that runs through a web browser.
Firstly I worked out a frequency for each planet
proportionally scaled on their distance from the Sun. Because of the huge
distances of the outer planets I had to use a different scale for them.
For the planets' beeps per minute, I worked out a
proportional tempo based on the orbits. I found a good tempo for Mercury first
(240bpm), then calculated the other planets based on that. Again because of the
huge numbers, I have to use a separate tempo range for the outer planets, otherwise
the inner ones would have been beeping too fast or the outer ones too slowly.
Once I had that sounding good I thought it would be great to
add modulation based on the number of large Moons each planet had, and also
some delay.
Here is the final result.
Audio track for looping through a bass amp!
BBC Radio 4.
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