Kernel Bob 
What's a viznut?
I found two programs on my iMac's drive. I wrote them in 2021. They're called viznut1 and viznut2. They generate 8 bit audio samples. viznut1's samples look like this.
uint8_t *out = ...
for (int32_t t = 0; t < 10000000; t++)
*out++ = t * ((t >> 9 | t >> 23) & 25 & t >> 6);
viznut2 is a little different.
*out++ = (t >> 7 | t | t >> 6) * 10 + 4 * ((t & t >> 13) | t >> 6);
Does anybody recognize these?
Kojote
nff