Here are the two Perl programs I use to generate the sounds on this web page. playlines.pl , generates synthetic spectra made up of Gaussian emission lines and power-law or black body continuum, and converts them into sounds. specsound.pl , Reads in an ASCII spectrum and converts it into a sound. Both programs rely on the MATH::FFT perl module available here . You will also need the SoX utility to convert the resultant ASCII waveforms into .wav files. SoX is available here . ...