Latency oddity (test OK at 80%; real usage not OK at 10%)

robbmasters · Post by **robbmasters** » Tue Oct 02, 2007 7:36 pm

I followed the Audio I/O lesson (in 6.0.10) to set up my latency...

I increased the CPU Usage Simulator to 80%, turned on the test tone, then adjusted my buffer setting until I got a continuous tone with no glitches.

However, when I stop the tone and play a single audio clip (giving a CPU usage of just 10%) I get lots of pops and crackles!

How come it's OK at 80% but not at 10%?

My system is a MacBook Pro 15.4" with Core 2 Duo 2.16GHz CPU, 2GB RAM, and a 5400RPM 160GB HD, running XP Pro SP2 under Boot Camp 1.4. My audio interface is an Echo Audiofire 2 and I'm using ASIO4ALL.

Thanks.

longjohns · Post by **longjohns** » Wed Oct 03, 2007 1:49 am

I've never believed in that setup test...

however you deserve to be upset if it can't play 1 audio track...

could be HD related though... but with only 1 track it would seem a serious HD problem (?)

Is it a problem with _any_ one track?

bleepsnbreaks · Post by **bleepsnbreaks** » Wed Oct 03, 2007 3:03 am

I have a similar problem with a Macbook Pro 2.4 core 2 duo.
I can only run about 1 VST and even then ther are a few pops.
If I run 2 its crackling like mad, no matter what VST I use and I have the latest versions of all my VSTs from the manufacturers site.
even if I have it set to the maximum amount of samples (with massive latency) it still does it. It does it no matter what aucio interface I use aswell, the internal one and my firewire one in my CME UF7 keyboard.
This is driving me bonkers, thousands of dollars worth of software that I cant really use.....
It doesn't make the crackling noise if I bounce the mix down......

robbmasters · Post by **robbmasters** » Sat Oct 20, 2007 1:06 am

Think I've solved my problem: http://www.ableton.com/forum/viewtopic. ... 118#567118

riograndeguy · Post by **riograndeguy** » Mon Oct 22, 2007 12:49 pm

Robb,, what kind of latency are you seeing now?

I had the exact same problem, I ran that little tutorial and go my buffers down to like 192 or something and ran fine with the test signal. But then pop, cracks when I tried to play anything.

I'm going to try this thing tonight. Im currently at around 13ms using m-audio Ozonic as a audio interface.

riograndeguy · Post by **riograndeguy** » Mon Oct 22, 2007 12:56 pm

Nevermind, I see you're getting 3ms.. man I want that!!!

Latency oddity (test OK at 80%; real usage not OK at 10%)

Latency oddity (test OK at 80%; real usage not OK at 10%)

Me too