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Subject: Re: 650 OS Update?

From: "djbrow54" <davebr@...>
Date: 2008-12-14

It's past midnight and I've gotten myself confused. Can someone
explain to me what the frequency of the Aux output should be when set
to ClkPulse and the MOTM-650 receives a Midi clock from an external
source set to 120 BPM? Explain the math, please

I realized I was confusing 96 PPQN for a sequencer with the 24 PPQ
for standard MIDI clock where I came up with the math in my original
posting.

I still believe there is an issue since the clock output differs
between internal clock and external clock set to the same BPM. I'm
trying to convince myself which is correct and I'm starting to think
neither is.

Dave

--- In motm@yahoogroups.com, "djbrow54" <davebr@...> wrote:
>
> I pulled out my Alesis HR-16 drum machine and verified that a 120
> BPM setting produced 250 mS clocks from the MOTM-650 while the
> internal clock generates 125 mS clocks. I've now verified equal
> results with two different external midi clock sources. I get 1/2
> the clock rate with an external midi source when compared to the
> internal clock. I believe the internal clock is correct and the
> external midi clock is divided too low.
>
> I also verified the ArpClkDv setting has no affect on the clock
> output as I would have expected.
>
> Dave
>
> --- In motm@yahoogroups.com, "djbrow54" <davebr@> wrote:
> > I re-setup my system. The only MIDI clock multiplier I know is
> > for the arpeggiator. ARP1 is set to 1X and ARP2 is off. I'm
> > using the clock output from channel 1 (Aux=clock).
> >
> > If I set the clock to internal at 120 bpm, I get clock pulses
> > at 125 mS, or 8/second, 480/minute. At 4 clocks per quarter
> > note, =120 BPM.
> >
> > Now if I leave everything exactly the same, and set the clock to
> > MIDI, and set my controller to 120 BPM, the clock is now 250 mS
or
> > 1/2 the frequency. Shouldn't these be the same frequency?
> >
> > I believe the 650 is dividing the MIDI clock 2X too much.
> >
> > Somebody else please check this. Am I missing a clock setting
> > somewhere?
> >
> > Dave
> >
> > --- In motm@yahoogroups.com, Neil Bradley <nb@> wrote:
> > > > 650 MIDI clock and external MIDI clock differ by 2X. Would be
> > > > nice if someone else could verify this. It's been so long
since
> > > > I looked at this I don't remember if it's too fast or too
slow.
> > >
> > > Are you 100% sure that you didn't have MIDI clock multiplication
> > > turned on?
> > >
> > > -->Neil
> >
>