Re: RE: PowerPC emulation of the //

[GUDATH@EZINFO.VMSMAIL.ETHZ.CH (Bright Software)]

In <2hhp82$3lf@news.iastate.edu> irsman@iastate.edu writes:

> You lose resolution doing this, unless you are outputting to a 16-bit DAC.
> Check out OctaMED on the Amiga, or any PC MOD player on anything less than a
> Gravis board.  Also, it's pretty damn computationally intensive, since you
> have to take into account the volume and frequency of each of the input
> samples.  The PPC is fast, but it's not THAT fast...  you need a dedicated DSP
> to do this with any kind of efficiency.

Synthesizing 4 channels requires about 20% of CPU time on a 33MHz 68030. As Ian
mentioned already, there's definitely a significant loss of quality because
samples are stretched to fit into the "22Khz scheme". You'll get lots of noise.

Mod players also have a 11Khz "heartbeat" - you won't hear anything above 14khz
or so.

Again, the PPC will have - optionally - the full AV equipment.

- henrik

PS: thanks Ian for the FlameStation tip. Since the accident last year destroyed
the only copy and major parts of this city, I have to steal it somewhere...

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