This is a little Javascript program that calculates the frequencies of partials in a harmonic or subharmonic series, and returns the results in a tab-delimited list ready for pasting into Excel.
Frequencies are calculated as: , where f0 is the fundamental frequency, s is the Scaling Factor, n is the partial number, e is the Exponent and α is the Frequency Addition constant.
If the ‘Subharmonics’ checkbox is ticked, however, then frequencies are calculated as:
Fundamental frequency:
Octave:
Fundamental frequency (Hz)
Scaling factor (1.0 = normal)
Exponent (1.0 = normal)
Frequency addition (Hz)
Number of partials
Quantize microtones to nearest:
Output (tab-delimited)
can be copied and pasted into Excel
Music Notation:
Graph:
NB: quarter-flats and quarter-sharps are encoded as double-flats and double-sharps, as Sibelius does not correctly import quartertones. Grrrr.