These programs produce sound via an AY-3-8910 audio chip. Perhaps this is another Trevor Taylor disk. None of these are usable on the emulator without AY-3-8910 emulation support. TTONE.BAS -- produce touch-tone audio for a given phone number FREQ.BAS -- single tone generator VOICE.BAS -- attempt to produce phonemes FREQ3.BAS -- three tone generator SNDGEN.BAS -- similar to FREQ3.BAS