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> early IBM computers shipped with pretty simple, magnetically driven dynamic speakers Yes the PC & donkey.bas were monophonic design, but the PCjr shipped wit
by dahart 2mo ago
> early IBM computers shipped with pretty simple, magnetically driven dynamic speakers
Yes the PC & donkey.bas were monophonic design, but the PCjr shipped with 3-channel polyphonic sound plus a noise generator. It might have been capable of doing the sounds in this port of donkey that took “some liberties”. ;)
I remember some sound demos on the PC that emulated polyphonic sound by fast/audible switching between notes in a chord. Hey it seemed cool at the time. :P I just looked and couldn’t find any quickly enough but bumped into examples of even better true polyphony on the PC achieved by assembly hacking.
- vunderba 2mo ago> I remember some sound demos on the PC that emulated polyphonic sound by fast/audible switching between notes in a chord Didn't know that about the PCjr! I'll have to see if I can find some examples of the generator online. Polyphony by rapidly switching between notes in a chord was also one of the common tricks on the SID chip for the C64. Even though it has separate channels, you could use get away with a single channel to play triads by arpeggiating extremely fast between the three notes.
- arantius 2mo ago> ... fast/audible switching between notes in a chord ... https://en.wikipedia.org/wiki/Arpeggio https://en.wikipedia.org/wiki/Arpeggio Many of my favorite chiptunes use this technique.