this post was submitted on 09 Apr 2026
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So you've constructed the photonic guitar and you're able to play it, but the pitch is up about 13 octaves and it has functionally no sustain? (Edit: and that makes us unable to hear any playing.) Is there any way to refract the signal or something to make it travel a longer distance inside the same space?
And one other curiosity, how do you play it? How do you "pluck the string"?
And thanks for chatting, this is wicked interesting!
We can’t hear the photonic guitar because the music it creates is in the form of light waves. In absolute frequency the waves are also pitched high compared to our audio range. In musical terms though they are the same pitches and octaves as produced by an acoustic instrument. We can’t see the photonic waves either as the frequencies are too low for that. Plus the visual range doesn’t even cover an octave. The timescales are also too short so there’s a variety of reasons.
The ADSR was my attempt to use a physical example to motivate why the timescales are shorter for the photonic guitar. The photonic guitar has plenty of sustain relative to the timescales that its physical size sets.
You can use dielectric type materials to vary the wave speed within the photonic guitar.
Strings are plucked using an electrical impulse. This sucker’s electrical.
In practice though the instrument is played by using math and guitar measurements.
Thanks for the questions.
If you can get it to an electric signal, why can't you just put it through a transformer that would allow it to plug into a guitar amp?
Edit: would a transformer be able to change the octave?
It is in general possible to bridge between the two but requires custom and specific hardware.