Re: BeatSync (was vortex info)

[matthias@bahianet.com.br (Matthias Grob)]

Anthony helps competentely about "old clocks":

>Well, sync24 is the most common vintage method of synchronising analogue
>equipment, as found on old drum machines (Roland TR808, TR606) and
>synths/sequencers (eg Roland MC-202).
>
>As it's name suggests, it consists of 24 voltage pulses (normally +5v, for
>around 5ms) per quarter note. Yup, just like midi clock...

This makes me think that I could connect the 8th/beat counter to BeatSync,
too. So this parameter would not only define the number of clocks / 8th
note for MIDISync but also the number of pulses / loop (actually: cycle)
for BeatSync.
But then again, someone might use MIDI and BeatSync simultaneously, one in
and the other out...

>Most analogue sequencers and arpeggiators just have a trigger in/out which
>advance the sequence by one step. Usually just a positive going pulse 
>(+5v),
>although some equipment used a negative going pulse (-5v), or a short to
>ground (S-Trig).

We did the last version, I call it OpenCollector (OC). The BeatSync line is
softly (10kOhm) pulled up to +5V and can be shorted to ground either from
outside (as input) or from inside (as output). The big advantage of this
system is that many machines can stay connected and send or receive pulses
simultaneously (as long as you keep track of what happens :-)

>I figure it'd be a great project (for people like us) to build a little
>sync utility box. It'd have a bunch of converters to convert between the
>varying types of pulse, and a clock divider which output a trigger every
>x input pulses...

This might be smarter than changing the Plex, since I do not have enough
parameters to cover up all options and also, there might only be a hand
full of those crazy analog sound creators,,, wrong?

Anyway, I love to learn about those things, thank you.
Matthias