My ears are ringing from blast of white noise from Logic 9

forgot to say:
called support (UK) ok i purchased this update of Logic (8) Studio Pro etc. a year ago, so not eligible for support. the telephonist was, as usual, nice enough to hear the problem. reply: "Never heard of that one before. try updating your hardware driver..." guess he never reads discussions, huh? this is a pretty long (unsolved thread)

maharaj,

A few questions for you...

1) are you recording to your internal HD or a dedicated project drive?
2) is that drive getting full (please post back with % of free space on the drive)
3) what sample rate are you working at?
4) have you filled out the questionnaire? If not, please go back one page in this thread and look for my post and the questionnaire I posted.

maharaj wrote:
forgot to say:
called support (UK) ok i purchased this update of Logic (8) Studio Pro etc. a year ago, so not eligible for support. the telephonist was, as usual, nice enough to hear the problem. reply: "Never heard of that one before. try updating your hardware driver..." guess he never reads discussions, huh? this is a pretty long (unsolved thread)

One addition iSchwartz's check list... in what file format are you recording the audio?

There is an old and nasty bug that Logic has had in dealing with wav files. Importing 24-bit wav files misreads the header in formation and ends up importing a raw wav file that is essentially a blast of white noise.

It's possible recording 24-bit wav files might cause the same header corruption.

p.s. I notice the original questionnaire doesn't ask for the audio file format, that might be something to add.

pancenter-

iSchwartz, actually it's not LP8 that I am coming from. It might be a different story if it was. In my post that was previous to the one you replied to I said I was coming over to LP9 from DP (Digital Performer)... and it was because I recently found out I liked the newer work flow of LP much better. I had LP8 thrown in front of me during an external project at a studio. I hadn't used LP for years, since v4 or something but with LP8 I was up and running so fast and digging the layout. Even though I never had a chance to go deeper into everything, that was enough for me. Well, it helped that I also had other engineers and friends telling me why they use it and why I should switch. As for bugs, I wasn't looking forward to the so called "memory warning" but I also get a similar warning in DP that is annoying. But like people say here, this situation is different. For me, I don't need to experience this particular bug, if that's what it is. I've always had pretty sensitive ears so the white noise blast is the stopper for me. Just the anticipation of something like this would already be causing problems with focusing completely on what I am doing. It really ***** because I was looking forward to using and learning LP9. I guess I could keep it, not install it, wait until this is figured out and upgrade it in the future, but paying for something I may not use for who knows how long seems pointless.

It arrives tomorrow and right now I'm leaning toward sending it back, but I'm not totally decided yet.

intermission,

I'll speak for myself when I say that I found your initial posts a little confusing, but now I gotcha. Thanks for clarifying. Oh, and thanks also for the insight on one of DP's flaws. It's enlightening to get glimpses of how much greener (or browner) things are on the other side of the fence.

I think it's fair to mention that there's no guarantee whether you're going to have this problem with L9 or not. Running in on PPC I never had it, but I did have it while running another app while Logic 9 was running in the background. Linked? Impossible to say, and I don't want to cast aspersions without evidence.

But I'll tell you this -- that there will be no fair warning if the blast hits you (unless you see the brick wall of noise waveform before you hit play). And even then, you might not be expecting to see it and thus you won't notice it. I know that I don't double-check to look at the integrity of every waveform after I record it, especially if I'm doing takes and I got my levels already.

Regards,

iS

iSchwartz, thank you for your reply. in reply to that:

1. same symptoms whether
(a) internal boot drive [capacity 297.77 GB; available: 88.84 GB] Mac OS Extended (Journaled)
(b) external dedicated project drive [capacity 232.74 GB; available: 172.76 GB] Mac OS Extended (Journaled)

OR

(c) external dedicated project drive [capacity 297.97 GB; available: 297.65 GB] Mac OS Extended (NEWLY INITIALIZED _NOT JOURNALED)_ LOADS OF FREE SPACE ON THIS ONE!!!

3. running 44.1 sample rate
4. sorry no time presently to fill out questionare - shall try asap

recording aiff files NOT wav...

many thanks again

sorry those underlines show up a strike out?!? anyway i'm sure u get the idea, the figures are still readable...

my apologies folks, i overlooked the fact that this thread is dealing specifically w/ logic 9, my situation is with logic 8. however the problem seems so similar to the one i'm having, i'm reluctant to spend and upgrade to 9 just to have the same problem over again...

btw my external HDs are firewire 800

cheers!

If I get a disk too slow message during recording - usually right when I hit stop - the last second of the newly-recorded region/file is a blast of white noise. After the first couple times this happened, I got in the habit of chopping off the white noise before playback. You can easily see it and once you remove the offensive bit, the file plays back with no problems. This happens infrequently and I can't seem to figure out why. I figured it was a disk problem rather than a software problem.

Have you experienced blasts of white noise while using Logic to record or play back audio?
• Yes

Under what conditions has the noise occured?
c) both

After recording audio, has the waveform overview ever looked normal but playback resulted in white noise?
• Yes

After recording audio, has the waveform overview ever appeared like a thick solid white bar that filled the entire waveform display (peak-to-peak waveform level)?
• I have not yet noticed

Computer -- complete specs of your Mac, including:
• MacPro 3.0
• 4x2
• 8 GB RAM

OS
• 10.5.8. Tried 10.6 (2 bad noise then) but downgraded to Lepoard and 2 bad loud noise with that to.

Logic
• 9.0.2 but after tomoorow no more. Back to 8.0.2


Frequency
• 3 times in Logic (too many, one was very serious to singer who was listening to just record vocal phrase ready to overdub another part. Singer very upset - session postponed) 1 time in Garage Band

Audio Interface
• Lynx Aurora
• PCIe Card


Hard Drives -- list each audio drive which you've used in the course of production and from which audio recording or playback has resulted in a white noise blast. Leave this part blank if you don't experience the white noise problem.
• Seagate 1.5 TB (recording) 7200 only 120GB used - new drive since 3 weeks.
• Seagate 1 TB (samples) 450 GB used
• Type: internal
• SATA III
• Is this your system drive? No
• Journaling: Off

Add'l Info and Observations

Has also blasted noise one time with no Logic running in 10.6 before I reinstall 10.6.2 when listening to files In GarageBand 08
For me this is very serious. With memory problems, unstable running and bad performance I am going to go downgrade to Logic 8. I never had these very bad problems with that version.

To add:- I have not had the noise happen if I disable monitoring through Logic

This is interesting because I have only had a blast of white noise from my MacBook which has software monitoring on. My Macpro has this switched off as I use the RME FF800 for monitoring. Perhaps a key factor?

Cheers.

Message was edited by: Judda

well done! indeed i hope apple can solve this.
in my case since i'm only running Logic 8.0.2 perhaps i don't qualify for the questionnaire?
many thanks.

Have you experienced blasts of white noise while using Logic to record or play back audio?
Yes

Under what conditions has the noise occured?
Since "upgrading" To L9. Can't remember particulars because it's been infrequent and it's been a week or two since it last happened.



After recording audio, has the waveform overview ever looked normal but playback resulted in white noise?
Yes

After recording audio, has the waveform overview ever appeared like a thick solid white bar that filled the entire waveform display (peak-to-peak waveform level)?
Yes, once or twice

Computer -- complete specs of your Mac, including:
MacPro Quad 2.66 11GB RAM

OS
10.5.8

Logic
9.0.X

Frequency
A few--maybe 10 times-- but only 10% of my sessions involve audio recording. Mostly composing with VIs

Audio Interface
• MOTU 896mk3
• FW400 connected to PCIe FW card.


Hard Drives -- list each audio drive which you've used in the course of production and from which audio recording or playback has resulted in a white noise blast. Leave this part blank if you don't experience the white noise problem.
• Velociraptors
• Is this your system drive? No
• Journaling: OFF on recording drives
• All Internal SATA

Add'l Info and Observations
Wish I could remember the circumstances. It's been rare but extremely unpleasant. It seems related I think to 3rd party plugins being used.

maharaj wrote:
in my case since i'm only running Logic 8.0.2 perhaps i don't qualify for the questionnaire?

Anyone running L8 or L9 can fill out the questionnaire. BTW, it's an informal questionnaire... I don't work for this company. I don't even get this problem! But I thought it would be helpful to gather information for those who do.