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RE: DD20 tap tempo input
but I have talked many times in
the past about a simple hardware midi-clock>trigger (or closure) device, such
as ebay was once awash with, & interfacing this with a DL4 to allow a midi
clock to tap-tempo the little green bugger.
no computers.
:-)
I haven't got around to it,
although I have a midi-clock>trigger converter inside of a yamaha cs30, doing
something conceptually similar & with great success to the little analogue
sequencer therein. I also have a similar midi-clock>trigger box that I got
off of ebay ages ago, & which I need to check is functional.
they are advertised as midi clock
converters, sync converters & so on, & are described in the context of
triggering arpeggiators &c in pre-midi synths. the output, therefore, is
usually a brief burst of 5v. this could easily be turned into a closure with a
relay or solid-state switch, though I'd suggest that an opto-isolator might be a
good idea in there somewhere. this approach may even let one interface directly
with the electronics behind the tap-tempo switch.
devices that require notes or
program changes to drive them will "occupy" a channel of the sequencer, which
might be a nuisance, but on the other hand, it may actually be a more flexible
arrangement, since you can set up the sequencer to "begin" or "cease" telling
the delay pedal what to do by simply adding or omitting the notes that do
the triggering.
a simple midi>cv/gate
converter will then provide y'r tap tempo pulses.
the devices I have described
above, & in the past, work purely off of midi clock & have selectable
divide ratios.
you could, even, take a feed of
pulses off the "step one" button/indicator of a drum machine, & adapt that
to drive a closure....
I will get around to
taking this further one day, I promise! my guitarist is always nagging me
for this fix, even though I sold him an echo-pro.... (which he
hates).
duncan.
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