Back in the days when CPU speed was measured in single digit MHZ (e.g. Amiga 68000 at 7mhz, ZX Spectrum at 6Mhz?), I had a hard time hearing anything other than

Back in the days when CPU speed was measured in single digit MHZ (e.g. Amiga 68000 at 7mhz, ZX Spectrum at 6Mhz?), I had a hard time hearing anything other than CPU noise on standard FM radios. You could indeed hear algorithms running very clearly, it's something I considered to be useful during a time when I was learning about CPUs and computer programming.