[sdiy] Percussion sequencer idea

[Dave Magnuson]

At 09:25 AM 10/3/01 +1000, you wrote:
>The 4013 divide by three requires a square wave in for a symetrical output.
>I tried it using a narrow pulse once, and the result sounded exactly like
>divide by 2, but the frequency counter insisted it was divide by 3 - the
>other step in the sequence was so narrow, it was practically invisible, both
>to hearing and the CRO.


I intend to drive my divide by 3 circuit from the Blacet MIDI to DIN-sync
IC...  so the clock should be pretty stable... so I guess I just need a
little conformation on this (I haven't bought the IC yet)


John:  Does your chip produce a fairly even pulse wave?  I see that it
makes a 5uS pulse... Any limits on the MIDI tempo where things start to
stray from "normal"?  Also, what is the voltage range of the output?  0 to 5v?

I see how you mention stretching the pulse width to 1mS with a 4538... does
your scheme with the 4018 divide by 3 follow nicely at a wide range of tempos?

Dave

Resonant Frequency:
resfreq at hoohahrecords.com
http://www.hoohahrecords.com/resfreq/index.html