[sdiy] DQOM

[Ian Fritz]

Hi Harry --

and thanks for the response.

>I'd vote for 1ms, because some folks use simple differentiators to
>do some functions and 50us might not whack them hard enough...

Not quite following that.  A differentiator responds to the slope of the 
signal, which has to be large for a narrow pulse.  Now if you were talking 
about an integrator ... that would respond to the area under the pulse, 
which would be small for a narrow pulse.  Why do they differentiate the 
trigger pulse, anyway?

>1ms is long enough for probably any electronic circuit to respond, but
>short enough to be a single click to a human (we would not hear both
>the rising AND falling edge).

Right. I agree for controller signals.  But I am trying to do two separate 
things -- control generator trigger generation, but also audio frequency 
functions such as sync.  A 1 ms pulse would severely limit the latter.

>I've done some playing with this recently with my guitar synth... some of
>my 20us pulses did NOT work with all my EGs...  So I made them longer

Ah, that's the kind of info I am looking for.  Did you check what the 
smallest pulse that would work was?

Best regards,

   Ian