This page links to PDF files for signals and power spectra of a few instruments playing a 440 Hz A4.

tuning fork	power spectrum
clipboard driven by tuning fork	power spectrum
voice (male falsetto)	power spectrum
steel-stringed guitar	power spectrum
steel-stringed guitar, harmonic	power spectrum
nylon-stringed guitar	power spectrum
nylon-stringed guitar, harmonic	power spectrum
nylon-stringed guitar, fuzzed	power spectrum

Last updated 1 October 2001.