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Originally Posted by ReadOnlyCat
Indeed, these are the ones I was thinking of.
I would have thought using 7bit samples would have provided a large boost though but maybe I overestimated it.
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7bit samples only remove ONE instruction from the mixing loop (actually ROXR.B #1 to shift back from 9 to 8 bits).
Well, ok, one would say that you have more bits to shift if you mix more channels, but then you mix in 16 bits and shift just once at the end (or not shift at all if using 14bit output).
Quote:
Originally Posted by ReadOnlyCat
Do you know if there is an available open source tracker which implements these tricks?
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Honestly i don't know how current trackers do their mixing...
Quote:
Originally Posted by ReadOnlyCat
It is hard to say though without FM synth knowledge whether good samples are computationally intensive to generate or not. I seem to recall reading that the best MegaDrive/Genesis sounds were obtained by varying the FM parameters dynamically with the machine's Z80 but I am not too sure anymore if I actually read it or if I deduced it from a few reads here and there.
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The Megadrive has a FM synth chip. The Amiga has none. So the situation is very different.