siggen is a set of utilities for generating diferent tipes of frecuencies
This 7zip files has:
smix - for manipulating the sound card: Volume, Bass, etc.
soundinfo - displays information about the sound device, chip, etc.
fsynth, swgen, sgen, sweepgen, tones - For generating sounds
siggen - same as above but using libncurse for a console interface, but libncurse seems to have problems with something that doesn't work
Includes manual for each of them