Last word on caps

Grant Richter grichter at execpc.com
Wed Dec 8 17:52:12 CET 1999


For MIDI>CV demultiplexers, you want to be able to
update the entire channel set in 1 millisecond.
So to determine the update rate, take one millisecond and
divide by the number of output channels.

A maximum of 4 milliseconds latency from note-on to
output is generally acceptable, but the primary source of latency
will be software, so the hardware should be as fast
as possible so as to not add additional latency.

----------
> From: Beszedes Arpad <beszedes at cc.u-szeged.hu>
> To: synth-diy at mailhost.bpa.nl
> Cc: harrybissell at prodigy.net
> Subject: Re: Last word on caps
> Date: Wednesday, December 08, 1999 5:39 AM
> 
> harrybissell at prodigy.net wrote:
>  
> > OTOH: most "flying" multiplexers using the 4051 analog switch seem to
like caps about .01uF. Remember that the switch resistance forms a low pass
filter.
> 
> And what would you recommend as the refresh rate using this value for
> the cap?
> 
> Thanks,
>   Arpad.
> 
> -- 
> ***********************************************
> *  Arpad Beszedes (research engineer)         *
> *                                             *
> *  Research Group on Artificial Intelligence  *
> *  Hungarian Academy of Sciences              *
> *  Attila Jozsef University, Szeged, Hungary  *
> *  e-mail: beszedes at cc.u-szeged.hu            *
> *  tel.: (+36) 62/45-41-45                    *
> ***********************************************
> * "To err is human, but to really mess things *
> *          up you need a computer."           *
> ***********************************************



More information about the Synth-diy mailing list