guitars

Sure, I can try. Let’s back up a bit. First, I made the photonic guitar the same size and shape as an acoustic guitar so we’d get a similar physical response. While many resonance equations are typically written as a function of frequency it is really the size of the wave relative to the object that physically matters. Since the speed of light is roughly a million times faster than sound, the frequency range where light is the same size as the sounds we hear is a million times higher. 20 Hz - 20 kHz sound waves becomes 20 MHz - 20 GHz light waves.

The second part is the time response of a musical instrument can be described by ADSR, attack, decay, sustain, and release. Attack is the initial response of the instrument to a new note which then decays into the instruments sustained response as the note is held. Eventually the response ends, or releases. Suppose I measure an acoustic guitar’s ADSR at a particular frequency. While this would typically be expressed in time, it is physically more descriptive to express each portion of ADSR relative to the period, or the time for one cycle, of the test frequency.

We know acoustic guitars are good for music so a photonic guitar with the same ADSR as an acoustic would also be good for music. Let’s just consider one part, sustain. Suppose the sustain for an acoustic is 1000 periods at our test frequency. The photonic guitar equivalent wave at the same size has a frequency a million times higher, thus the time of a 1000 period sustain is a million times shorter. 1 second of music in our time is equivalent to 1 millionth of a second in photonic guitar music time.