Sure, you need some kind of voltage, but a parallel port only can send 5 volts and a COM port sends the same voltage while it transmits ranging up to 25 volts perhaps. So if the voltages can't be altered, the only thing left is frequency modulation.
Speakers work on changes in voltage from on to off. You can put a capacitor in line with the output of a sound card to isolate the DC voltage from the speaker and still get sound. An LPT port would probably burn up trying to run the current draw of a speaker.
So you point by point me and THEN provide NO solution or code anyhow? What good does that do? I already KNEW you were smart, so don't EVEN TRY to impress ME!
|Response Title||Author and Date|
|I DID provide a link to a related program...||on Dec 20|