I created a program like that back in the day. In my case, I recorded my voice through the "MIC" input and played it back through the TV. A few seconds of sampled audio required the entire available memory. While I fully understood what was going on, I thought it was magical that the Spectrum could "speak with my voice".
The article ends to a link to a video that shows off the technique and it blows my mind the Spectrum beeper could produce this: https://www.youtube.com/watch?v=7cOu32m3wvQ
More mind blowing, that entry took _second_ place! First place would probably break my brain for the day so I won't look it up.
Release party: DiHalt 2026 summer Compo: Demo Platform: zx spectrum Ranked: 2nd
I created a program like that back in the day. In my case, I recorded my voice through the "MIC" input and played it back through the TV. A few seconds of sampled audio required the entire available memory. While I fully understood what was going on, I thought it was magical that the Spectrum could "speak with my voice".
Sounds pretty good. Reminds me of the Demo Scene and the types of music they were able to create.
Turns out 1-Bit encoding is the most efficient solution, even for the highest end of audio quality: https://en.wikipedia.org/wiki/Delta-sigma_modulation
Some apparent links don't appear to work at the start of the page, and I couldn't see any links to listen to the output?
People may enjoy this too https://www.youtube.com/watch?v=_6f8PURcPEE
End result of it playing 1-bit music: https://www.youtube.com/watch?v=IjTihhFG03o
reminds me of: https://github.com/protodomemusic/mmml