[sdiy] Keyboard scanning rate
Scott Gravenhorst
music.maker at gte.net
Wed Nov 25 22:07:31 CET 2009
Neil Johnson <neil.johnson97 at ntlworld.com> wrote:
>Hi,
>
>Ullrich Peter wrote:
>> In the Korg Poly800 I measured around 950Hz.
>
>Ok, so a little over 1ms plus a little slop per scan.
>
>At 1ms scan time I can't play fast/hard enough to reach the maximum
>velocity value so I may go with that for now, with the option of
>going up to double that rate.
>
>I know there are a few people on the list who have designed and built
>their own scanned digital keyboards, so I'm hoping for some differing
>opinions.
I would run it as fast as it will go and still perform correctly. I see no
advantage to a slower scan rate. Just my opinion...
-- ScottG
________________________________________________________________________
-- Scott Gravenhorst
-- FPGA MIDI Synthesizer Information: home1.gte.net/res0658s/FPGA_synth/
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