Re: Repeater: Persistent Problems with Sync

[Mark Sottilaro <sine@zerocrossing.net>]

I have tried the opposite, where the Repeater is set to chase the output 
clock
of a drum machine, and it does work well.  The Repeater time shifts your 
loop
really well.  It's an amazing effect.  Anyway, my guess is that the reason
there is a time lag is that the Repeater is too busy working on the time
shift, which doesn't exactly chase the tempo if you do it too quickly.
Anyway, that's a whole lot of processor time doing time shift, I would 
imagine
getting a perfect midi out would be hard.  The Repeater shouldn't try.  If
it's getting MIDI clock, why not just pass that clock out the thru?

Mark

Kim Flint wrote:

> At 01:23 PM 9/10/2001, you wrote:
> >so much for that theory...
> >
> >kim, you said repeater always sends midi clock.
> >does it do this even if it is set to synch to midi?
>
> ok, I checked this further. Yes Repeater always sends midi clock out it's
> output even when it is in Midi Sync mode, where you would expect it only
> receives midi clock. In Midi Sync mode the clock it sends out is not a
> direct pass-through of the input clock either. It is related to 
>Repeater's
> tempo.
>
> I was curious what happens then when you change tempos. The repeater 
>tempo
> doesn't directly follow the input clock, ramps at it's own rate to the 
>new
> tempo. So if you make a radical tempo jump on your midi clock master,
> Repeater will ramp there and can take quite a bit longer to reach the new
> tempo, especially if you are slowing down. since tempos of repeater and
> other devices are different during this ramp, they end up completely out 
>of
> sync when repeater finally settles to the new tempo. So that's not real
> useful.
>
> The repeater midi clock output during this tempo change ramps with the
> repeater's tempo. Or at least, that's what it seems like they wanted it 
>to
> do. Actually it jumps all over the place while repeater is ramping in
> tempo, so my drum sequence sounds like a drummer that just got hit with a
> beer bottle during this time. It's kinda nuts. when Repeater finally
> settles on the tempo, the clock straightens out to a regular pulse 
>(except
> the 23rd one :-). of course, now the midi device after the repeater is
> slipped in time from the device before the repeater, so you will have to
> restart everything to line it up again.
>
> I guess this is why I saw a number of instances on the electrix forum 
>where
> they were recommending to use midi thru for devices down stream of
> Repeater. :-)
>
> kim
>
> ______________________________________________________________________
> Kim Flint                     | Looper's Delight
> kflint@loopers-delight.com    | http://www.loopers-delight.com