avelon@emit.pl said:
> I think it depends on the inertia of the speaker rather than elecrical
> capacitance. My point is that as the inertia of the speaker becomes
> lower there is less filtering of the 18k component. Ie the speaker
> cone starts to follow the square wave. I can hear a high piched whine
> on new PCs which I don't notice on older PCs.
Hmmm. However, I believe that the limitation of 18KHz for the master
frequency was mainly due to the number of CPU cycles it would take away
from 'real' work, rather than being a limitation of the actual IRQ
generator.
The speakers may be getting better, but CPUs are also getting faster. I
don't see why we couldn't increase the hardcoded limit of 18357 Hz for the
master interrupt rate.
My current workstation says:
PCSP 1.3 measurement: maximal samplerate 108470 Hz, 18356 Hz used
Plenty of scope for increasing the sample rate. Wanna try it and see what
you think?
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This archive was generated by hypermail 2b29 : Mon May 15 2000 - 21:00:16 EST