I'm curious about the possibility of sonifying MIDI data, which has a bitrate of 31250. The range of human hearing extends to about 20kHz, which means that the fastest bits of the signal would lie near the top of this range: not ideal for my purposes. I envision stretching the signal, and then passing the result to a small speaker.
I'm not sure if there is a more precise term for this operation than "stretching" (I'm not super familiar with digital signal processing). At any rate, I can provide a concrete example of what I mean:
00101110100001 >> stretch by 2 >> 0000110011111100110000000011
Not unlikely, the resulting sound will seem be rather atonal/noisy, and that's OK by me. I imagine that I could accomplish this task with Arduino, but I'm wondering about whether this could be done with clever circuit design. For instance, something akin to using a 4018 divide-by-N counter IC? I recognize that the 4018 isn't exactly what I'm looking for, since this acts on a strictly periodic clock signal.