Every so often sound screeches – killing my ears

[Bj Ahlen]

Sounds like you have an open audio input on that Intensity Pro card picking up RFI.

Just pull the plug on it, or turn down the audio input completely.

Or do you have any additional audio I/O devices hooked up?

[Chris Tompkins]

I’ve worked with footage recorded on a FireStor that had like a digital glitch/spike thing that was so loud it scared the Bleep outta me.

Was your footage recorded to a hard drive or P2 in the field?

Chris Tompkins
Video Atlanta

[Kyler Boudreau]

My sound came from normal in camera sound (backup sound source) and from some type of digital mixing board/field recorder win the format of wav files.

Yes….it is SO loud it makes me not want to edit.

This happened before the BlackMagic card was installed. And I don’t have any other 3rd party stuff hooked up to or installed in the MAC PRO except a firewire card.

_______________________
kyler boudreau
http://www.theatereleven.com
ph.310.425.2231

[Bj Ahlen]

Try a clamp-on ferrite core on the Mac Pro’s power cord, at the Mac end.

Radio Shack should have this, and most home theater stores too.

[Richard Cooper]

My assistant editor had this exact same thing happen randomly to him while roughing out segments on a mac book pro running Snow Leopard and FC 6. He was monitoring with headphones out of the headphone jack on the laptop. I thought he was going to throw my laptop out on the street! Totally random and NO extra hardware. Very annoying and hard on his ears. We wiped the drive reinstalled the OS and FCS and have not had the problem since. Still don’t know what caused it…. but problem solved.

Sorry I don’t have a better answer for you.

Hope this helps.

Richard Cooper
FrostLine Productions, LLC
Anchorage, Alaska
http://www.frostlineproductions.com

[Kenny Powerass]

I’ve had this happen a number of times, but haven’t been able to recreate it or find a common thread in the situations that could help me troubleshoot. I’ve repaired permissions, trashed prefs, restarted, rested my drives. Nothing seems to eliminate it completely. I also have a Blackmagic card, but I’m not always using it.

Recently, I captured some clips via the Voiceover tool. Once all the clips were in and I started editing them I was getting these loud screeches randomly on one of the clips, but not on any of the others – to the point where I had to trash the clip. I never bothered recapturing it, but it made me think there was something in the clip triggering a glitch rather than it being a random hardware or software issue.

I’m keeping an eye on this thread to get to the bottom of this. Like you guys, it’s the closest I’ve ever come to smashing the computer.

[Kylee Pena]

Check this out and see if it’s this simple:

https://forums.creativecow.net/thread/8/1088513#1088595

[Bj Ahlen]

…and if it is, get Loader.

I had completely forgotten what life was like without it.

[Kesten Migdal]

I get the screeching with .wav files imported from original tracks I composed in Logic Pro. Just insane adrenaline panic screeching. I’m still shaking from one that happened a few minutes ago. My FCP sequence settings for audio are 48 kHz and my export settings in Logic were 44.1 kHz. I exported at 48 kHz and that seems to do the trick!