dixon sound card drivers

Freeware Experimental-Program 9-Tone-MFSK with sound card.

Test impedance & response of speakers with a mike, preamp, PC & sound card

Uses sound card Frequency analysis Spectrum Analyser

DTMF dial is a software program designed to emit DTMF tones from the sound card.

capture hardware, your audio/video/TV devices, the drivers and tech interface.