Back in the day, home computers could save your data files onto an audio tape, by converting them into warbly noises that you could record. This relied on the fact that it made noises that were in the normal pitch range of human speech, so they could be reliably recorded onto existing audio storage mediums.

My question is: Can you still do this? Are there programs available that will take an arbitrary data file, and convert it into a wav file (or similar), the contents of which represent the file? There must be more modern methods than were available in the 80s.

I’ve had a Google, but I’ve found nothing useful. Help me Lazyweb, you’re my only hope.