Theory Resources

v1.0 ©2002 Michael Norris

This is a little Javascript program to produce a list of spectral peaks and their microtonal tunings, given a spectral analysis data file exported from Audacity, or a BPF file exported from Audiosculpt .

Max. number of peaks to detect:

Peak is largest of n neighbours:

Peak must be higher than:


No more than one peak per:



dB per octave

Spectral Data:
(copy and paste an
Audacity .txt/Audiosculpt BPF file)

Data output (for pasting into Excel)