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danmix
post Fri 6 Apr 2001, 20:32
Post #1


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Joined: 04-Apr 01
Member No.: 410




Hi, this is concerning MIDI TIMING on CUBASE MAC v 4.1 and 5.0.
The set up is:
Mac clone POWER CENTER PRO + XLR8 G3 500 Mhz running OS 8.6 352 RAM.
OPCODE studio 64XTC midi interface.
oms 2.3.8
MOTU 2408
latest asio 2.1 from MOTU /

I have tried all the solutions i can think of to solve this issue...
OMS,pci card,Drivers,MacOS,extensions,preferences,etc...

Recording the midi to audio will produce random timing shift as far as 15ms late once recorded on the audio track !

The midi needs to be recorded at some early stages since it will drift as more cpu is used!
This is happening with minimum load on the cpu.

As you can imagine, this render the program almost unusable for midi purposes.


Anybody else experiencing this?
Thanks!
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lloydforth
post Wed 18 Apr 2001, 09:39
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Joined: 15-Apr 01
From: London
Member No.: 446




two things are probably causing this

no.1 OMS unfortunatly was coded around the time when 68k code was used and has never been rewritten for PPC machines

Bottleneck 1

Bottleneck 2

XLR8 proccessor upgrade. what is the ratio between the buss speed and the proccessor . and how much backside cache do you have?

the answer to your problem is sell the clone purchse at least a B+W G3 pref G4 and look at other interface's

Motu interface's use a version of OMS that they have had re written it's called 'free midi'

probably not the best news you have had today but what use is a composition tool that swings like a transvestite at a porn convention!
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