OS 9 Metro 5 Titanuim USB Audio Interfaces Mess Up Timing

[ogusa]

I've tried a Roland optical USB interface and now a USB Griffen Powerwave to get better audio out. Both make Metro 5 on my OS 9 Powerbook Titanium 550 (lots of RAM) slow down sporadically.

I don't want to go to OS X - too much legacy software.

Alreaddy I found out that Metro 5 doesn not support the 48K standard of the Roland interface. Perhaps that's causing the CPU to work too hard, but I can't figure out why the Griffen affects it also.

Anyone else? Any ideas?

Thanks,

Peter Sturges

[Jerm]

Go to preferences/timing and turn on 'Time Manager'

[ogusa]

Thanks for your help.

If its the "Extended Time Manager", it's already on. Any other ideas? The timming distortion is like turning 16th notes into 8th note triplets and theyditisurge".

Peter

[Jerm]

Make sure that all of your audio instruments (and aux busses) are set to the same audio device. If you use more than one audio device timing will be off.

[ogusa]

Thanks again for your time.

I do use more than one softsynth on the MIDI tracks - Reason and Cybersynth (no VST stuff though) as well as digital audo tracks. Works great when outputting through the Titanium's headphone jack, but goes wierd when I try to use a USB output device.

Am I stuck with using the headphone out? Is this fixed in Metro 6?

Mahalo

Peter

[Jerm]

Peter,

I am surprised that it works at all without using rewire (which is not compatible with Metro).

You could try the Metro 6 Demo to see what kind of results you get.

[ogusa]

Cybersynth is a old softsynth - a QT like system extension accessed via OMS (has its own driver). Reason is accessed via OMS thru the IAC bus. I even use VSamp as well once and awhile via OMS thru the IAC buss.

I don't think this configuration should be considered extraordinary. BTW, I am only trying to use one USB output device at a time (perhaps I misspoke earlier).

I guess the last thing I should try is disabling my beloved Cybersynth (some very excellent sounds, even if only 12 bit samples). It's pre USB software, and may be accessing the system at a low level (it has the ability to record its output to an .aiff file direct to disk).

Mahalo again for your help.

Peter