I am building a new instrument, and I need to find the sixth sequence in the given series, {659.25, 440.00, 293.66, 196.00, 130.81}
that would be around 80 Hz.
An exponential regression at wa, gives the following function
$y(x)=987.76 e^{-0.404335 x}$
But I am not sure if this helps anything. The sixth frequency would be musically compatible with the other 5 frequencies, and its distance in Hz from the 5th, at 130.81 Hz is the unknown factor. How do I find this.
Thanks