MIDI clock sync problems

Polyphonic · Post by **Polyphonic** » Tue Jul 26, 2005 10:10 am

Hi,

I've posted this in the beta bugs section of the forum but I think that part of the forum is going to be locked soon so I'm transferring to this part. I'm not spamming the board, honest!

I have Live5 sending out midi clock to a Korg ElectribeSmkII. After various tests, it looks like I need a sync delay of -25ms. If I set this whilst Live5 is playing, the Korg becomes in sync and everything sounds great. However, on next playback, it's out of sync again and I need to set the sync delay by a further -25ms to, say, -50ms. Is this a bug? I know the sync delay options in Live5 are different to v4 but I'm setting it up for the correct output (I've checked and double-checked!).

Everything works great in v4.1.4.

I then tried something else; I connected a Korg ER-1 and used MIDI thru to connect the ElectribeS.

I set the sync delay to -25ms again and the ER-1 always stays in sync yet the ElectribeS has the exact same problem (and therefore isn't even in sync with the ER-1 even though it's on the same cable!). This could sound like a Korg problem BUT it all works perfectly in v4.1.4.

Has the MIDI clock code changed since v4? I really need this to work!

Anybody else experienced similar problems?

Robtoron · Post by **Robtoron** » Fri Jul 29, 2005 1:40 am

same problem here with tr808.
if i have found the right delay, i press stop and play again to record, it is again out of sync!

Post by **Alex** » Fri Jul 29, 2005 10:08 am

Hi folks

please do not forget to let us know on which computer platform, with which operating system you are and which MIDI interfaces you use.

regards,
Alex

Robtoron · Post by **Robtoron** » Fri Jul 29, 2005 10:36 am

Ok sorry, here my setup-
Computer: Powerbook 1.25, 1GB RAM, Mac OS X 10.3.9
Midi-interface: Motu Micro Lite, Audio-interface: Mackie Onyx 1220 + firewire.
And a tr808 with midification that won't go in sync with Live. Everytime i restart the delay is different than before, from 5ms-250ms everything is possible but its never the same when i restart.

Polyphonic · Post by **Polyphonic** » Fri Jul 29, 2005 10:53 am

Hi Alex, I have the same problems as Robotron but we are already in correspondence on the Beta Bugs forum, as you know.

Anyway, computer spec:

AMD64 2800
1GB DDR400 RAM
WinXP SP1
Terratec DMX6Fire soundcard/midi output

Post by **Alex** » Fri Jul 29, 2005 11:17 am

As I wrote in http://www.ableton.com/forum/viewtopic.php?t=23976 ,
we just wait until my teammate Eduard is back from vacation to look at this potential problem. Meanwhile I just want to gathering all needed facts.

regards,
Alex

GrooveT · Post by **GrooveT** » Thu Aug 11, 2005 4:12 pm

Hello everybody!

Also Problem here.

Setup:
Motu Firewire 828mkII (MIDI-Clock) ->
-> M-Audio Midisport 8x8/s ->
-> Roland MC 307 (Slave Mode)

I need a MIDI-Clock offset by -75ms

1) MIDI-Clock offset=0ms
2) hit play -> out of sync
3) turn MIDI-Clock offset to -75ms (while still playing) -> plays nicely in sync
4) hit stop and play again -> out of sync, MC 307 plays 75ms to early
5) turn MIDI-Clock offset to 0ms (while still playing) -> plays nicely in sync
6) hit stop and play again -> out of sync, MC 307 plays 75ms to late
7) goto 3)
...
...
...

This problem occurs in versions 4.1.4 and 5.0.1

Greets, Christoph

milan.SPK · Post by **milan.SPK** » Sun Aug 21, 2005 11:44 am

try changing your audio, not midi setup. it helped me with the same problem (1.8Ghz 768Mb ram, SB live5.1, mikroKorg, Korg electribe sx1)

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MIDI clock sync problems

MIDI clock sync problems

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