Firewire Audio Static/Distorted

In the middle of a project today, during playback, audio through Firewire deck became static, distorted, too loud. Audio meters in FCP are fine, but meters on firewire deck are pegged. Tried other projects and they have same problem. Swapped firewire cable to no avail. Switched over to my MacbookPro but rest of my regular peripherals and played the same project without the problem... so it must be something in my MacPro Tower. If I set FCP to playback audio through computer, not firewire, it plays fine.
Ideas?

I've seen this issue on several IntelMac edit stations when FCP 6 was first released on through v6.0.2. Just to compare, the problem I've witnessed is that the Firewire audio out will suddenly be nothing but digital garbage; distorted, garbled, scratchy noise. Changing the audio routing to the internal speakers results in normal audio, but as soon as you change it back to Firewire (or Audio Follows Video), nothing but garbage again.
AFAIK, trashing preferences has always worked ... keep us informed on what you find out.
-DH

Similar Messages

FireWire Audio static

This is kind of a reverse post, in which I've found the solution and wanted to share my findings.
I have an Edirol FA-101, and (after not using it for a while) tried to use it and consistantly got static over the output. (not sure if the behaviour is new to 10.5.7)
(using firewire 400 to the interface, and optical channels 9-10 to a receiver)
the only way i could find to get rid of the static was to open the audio midi setup, under Audio Output click the drop down of the channel/bitrate (to the right of Format:) and click the option... it then magically plays clean.
not sure where fault lies in this one, but it drove me nuts.
Message was edited by: ianwilder

I've seen this issue on several IntelMac edit stations when FCP 6 was first released on through v6.0.2. Just to compare, the problem I've witnessed is that the Firewire audio out will suddenly be nothing but digital garbage; distorted, garbled, scratchy noise. Changing the audio routing to the internal speakers results in normal audio, but as soon as you change it back to Firewire (or Audio Follows Video), nothing but garbage again.
AFAIK, trashing preferences has always worked ... keep us informed on what you find out.
-DH

Intermittant audio static/distortion when streaming video

New member seeking solution to an annoying problem. When
streaming video sites such as Youtube, MSN videos, and other video
sites, the audio has intermittent static, much like a radio station
that isn't fully tuned in. I have a laptop with an external sound
card, and it does it through it hooked to a small stereo system, as
well as the laptop's built-in soundcard and speakers. I have
updated the Flash player, and tried completely uninstalling and
reinstalling the sound drivers. Next thing, I am going to totally
uninstall Adobe Flash and try reinstalling it to see if it takes
care of the problem. By the way, it does it with both Internet
Exploder and Firefox. Any suggestions are welcome.
Sincerely,
John

The same thinks happens to me,
Thank you.

Digital distortion on external firewire audio Edirol FA-101 and 10.4.11

Hi
Not sure if this is the right forum but I have an Edirol FA-101 external firewire audio unit and it seems like prior to installing 10.4.11 update for Tiger the audio was perfect. Now however I get a constant level of what sounds like digital distortion even without any audio sources playing out of my FA-101.. I saw the forum/support notes regarding audio problem with 10.4.10.. just wondered if anyone has similar experiences..the audio device does not have it's own drivers but uses the mac built in firewire audio support.
Thanks

that's what outputs 3 and 4 are there for. You can't control one stereo output to do two different things at the same time... it says in the edirol manual that the headphone jack outputs the same as output 1 and 2 from the back.
Therefore if you want a separate stereo output pair to connect your speakers to, you must use outputs 3 and 4.
Edirol didn't make the unit for the pc - actually the hardware was designed for the mac (hence it's core audio compatibility out of the box).
Edirol's fa-101 and fa-66 (which I own) are mac product which just happen to work on the pc thanks to the driver they had to write after the fact to support windows xp. Plug the unit into a pc without the driver and nothing happens. plug it into a mac running osx and it's automagically configured for low latency, highest performance, midi and audio in and out.
Have fun owning the best interface you can get for the mac for the money!

USB audio Interface distortion/static when sound is played.

My USB audio interface started sending out static/distortion to my speakers one day. It's more apparent when volume is very very low. To troubleshoot I switched to the other USB port and it worked fine for a month or so. Now the second USB port is creating static. I have reason to believe it's the computer not my interface as there was static on one usb port and none on the other. Now both ports create static. Is there something in my computer I can try reseting or should I look into getting a new interface?
Thank you in advance for any guidance with this.
Andy
13" MacBook (Late 2008) 2.4Ghz w/ OS X 10.6.6

No noise problems when the interface is plugged into other systems.. Only on the G5...
And I tried plugging it into all the different USB ports on the G5, the one in front and the two in the back... All with the same result.
Thank you for your reply.

(MacOSX Lion 10.7.4) The problem of connecting the audio interface (USB and FireWire), grained acoustic distortion!?

When you connect the audio interface to usb or firewire grained acoustic distortion, there is no loud noise in the acoustics! In the old "iMac24 Snow Leopard" was not like this!
Just bought the iMac21 lion, installed the new drivers and the two interfaces of different firms is presented, this acoustic problem.
I understand it comes from a usb and firewire!?
Help Me_____
Sorry for my english

Well, it's been a few days and with no response I thought I'd look for another solution. I've been trying this software called iVPN, apparently it's like a front-end to OS X's built-in VPN server. Anyway, I disabled the VPN Server from the Server app, turned on iVPN and was VPN-ing from my iPhone over 3G in notime. It's a great app, though it kinda ***** that the server can't do what it's built to do. Since VPN was the big reason I got Server in the first place, I'll probably uninstall it and stick with OS X's built-in file sharing and iVPN.

10.4.11 external firewire audio device noise/distortion

Hi
Subsequent to upgrading to 10.4.11 I now have persistent noise from my external firewire audio device. It's an Edirol FA-101 and worked perfectly in 10.4.10 and earlier. I tried replacing the firewire cable with no effect.
The FA-101 is a class compliane device so uses Apples built in firewire audio drivers.. has anyone else had firewire audio problems with 10.4.11?
Thanks
Mark

No I doubt it... FW can be strange sometimes.
Look in Sytem Profiler, if it says you don't have FW at all, then remove all power from the iMac, let it set a few hours to Drain down, plug back in everthing.
Or...
http://docs.info.apple.com/article.html?artnum=301733

IChat AV doesn't work with M-Audio Firewire audio interface

I saw similar topics to this but none dealing with a Firewire audio interface and none with exactly the same problem.
Every other piece of software I use works with the M-Audio Firewire Solo, except for iChat AV. When it is the selected output device and I start a video chat with someone, I get just horrible, loud static when the person on the other end speaks.
Running 10.4.10 on a Macbook Pro (2.16 GHz Intel Core 2 Duo).
Does anyone know of incompatibility issues with iChat and Firewire interfaces?

In Audio MIDI Setup (In applications/Utilities) the setting for my Mic is 44100khz 1Ch 16bit.
The Internal Audio connection also shows up at 44100Khz 2Ch 16bit
Are you looking in the same place or in the device itself ?
I would set it in the Audio MIDI Setup and then make sure it responds in System Preferences > Sound > Input tab.
Once the Blue bar moves to at least halfway there I would then check iChat > Preferences > Video Section to see if the green bar under the Vido pics is moving.
4:25 PM Friday; September 7, 2007

High pitch squeal related to Firewire audio device after 10.6.2 audio patch

So the recent Mac Pro audio update 1.0 (applied on 10.6.2) has reduced my CPU temperature with audio playback (Presonus Firebox Firewire audio interface) and that is great. Also haven't had any machine crashes (grey screens) recently which is also great.
The problem is that when the Firebox is plugged into the firewire port of the Mac Pro there is a constant high pitched whistle of slightly oscillating frequency. If I unplug the Firebox the whistle goes away in a few seconds.
After prolonged use in a quiet room (the kind of room you need for audio recording / mixing work!) the noise is enough to drive me crazy.
I read a post on another forum with other people having the same problem. Can anyone comment here on seeing the same thing? Is there any known work around or fix for this?
When the CPU is under heavy load (e.g. H.264 compression etc.) the noise subsides only to return when there is normal load (i.e. half a dozen apps running).
Help!
Thanks

So I was able to back out the update using "Kext Helper b7" and the original IOPlatformPluginFamily.kext and AppleHDA.kext files from a backup before applying the update. It's pretty easy - just drop the two files onto Kext Helper, hit "go" and then reboot.
My ears are no longer in constant pain and I can actually use the Mac Pro again albeit running quite hotter than before.
This is not a fix Apple. The problem looks unrelated to a specific device based on the posts in this thread. Please issue a usable fix for the Mac Pro Audio performance issue.

Does 2 firewire audio and video interface can work together on FCP ?

hello,
My audio interface is a TC Electronic Konnekt 24D
my video interface is a Canopus ADVC 110
my hard drives are plugged in firewire too
and I use Final Cut Pro 5.0.4
So, the konnekt is recognized by FCP only when the Canopus is not plugged. And even then, the audio sometimes drop out and sometimes causes the app to crash, so that I have to trash the preferences
When I plug the Canopus, the Konnekt 24D is recognised by OS X but not FCP
I want to use the voice over tool with the konnekt 24D, so what should I do ?
Does 2 firewire audio and video interface can work together ?
If so, maybe I only have a driver problem from TC Electronic.
But if not, I have to change this interface. Let me know if only RME, MOTU, Presonus and Edirol work, as it is said on apple's webpage for hardware compatibility
thanks
eMac G4 1,25 Ghz Mac OS X (10.3.9)
eMac G4 1,25 Ghz 1 Go RAM DDR Mac OS X (10.3.9)

The 1082 does show up as a possible input when I open
the VO tool.
Ok. So an audio interface can be plugged to FCP without crashing the app. Because of the Konnekt driver problem, I wasn't shure of this.
I use my Aja box for export & external monitoring.
All my audio sources run back into the Tascam and I
use the analog mixer in the 1082 to monitor different
sources.
When I view external video, the audio follows it to
keep sync.
that's exactly what I want with other I/O interfaces. I'd like to monitor video with the canopus ADVC 110, and monitor audio with the Konnekt 24D (or another interface if this one is not compatible)
I also imput dailies with a deck or a camera (DV or HDV) but that's not the point here.
I want to imput audio with the Konnekt 24D because of its audio quality. Not audio sync to video dailies. But voice over, in sync with FCP video playback (for me, tha ADVC 110)

IMac FireWire Audio Interface keeps disconnecting

I'm having an intermitten issue with my iMac, which worked (and still works) fine with my IBM based notebook. My firewire audio interface keeps disconnecting, it works fine for a while (could be anywhere between 5 mins to 2 hours) before completing not giving any output, it doesn't switch back to Core Audio during this time. However, if I turn in off and on again, it's fine again.
Any ideas?
More Info:
Audio Interface: Profire 2626
iMac 2011
OSX 10.6.8

PreSonus FIREBOX 24-bit/96kHz FireWire

After Install IOS 8 and 8.0.2, the Ipad audio was distorted, and the bluetooth connection to audio speaker have wheezing.

After Install IOS 8 and 8.0.2, the Ipad audio was distorted, and the bluetooth connection to audio speaker have wheezing.

I ALSO just updated my brand new iphone 6 to 8.0.2, and I ALSO had my cellular service BRICKED.
All I get on the signal meter is Verizon 1x. Every so often 3G would popup and you could send a text (no calls though) but it's gone in seconds. So I can't send texts or make phone calls.
This phone worked immediately before the update and stopped working immediately after the update.
My neighbor has a iphone 5S. He updated to 8.0.2 lat week and had no problems UNTIL just this morning, when his phone stopped working - no cellular voice or data. He downgraded back to ios 8.0 but his cellular service never came back.
Called verizon - was told there were no service outages and then I got transferred to tech team.
Tech team had do all the Apple troubleshooting steps but nothing more. So they said "take it back."
So this BRAND NEW iPhone 6 phone is BRICKED because of iOS 8.0.2.
Thanks Apple!

Multi channel firewire audio interface

Hello, Is anyone using a multi channel firewire audio interface with a mac mini? eg alesis miltimix?

No issues. You'll probably want to invest in an external 7,200 RPM Firewire drive though since the Mini only has a 5,400 RPM SATA internal drive.
I used it with both TIger and Leopard as well as Logic Express 7.2 and Logic Express 8.
OS X supports it right out of the box so I didn't even need to install additional drivers.

Unstable timeline movement using FireWire audio (MOTU 828mk3)

I'm using a 32 bit system with Windows 7 Home Premium and Service Pack 1. An AVI that I captured with my DV camera will not play in Premiere Elements. I can see the time line making a loop every 10 seconds or less whenever I use FireWire for audio. If I use Windows Sound Card, it plays well.
The same AVI plays well on Windows Media Player with or without the FireWire audio interface.
I'm new to Adobe but have used AVID Liquid Pro before. It seems like I'm missing a CODEC but I'm not sure if that is the problem. NOTHING plays right with the FireWire Audio selected regardless of the many settings I have tried.
Thanks,
Joseph Balsamo

I'm using Premiere Elements 12.
The 828mk3 is a FireWire audio interface. I'm actually using IEEE 1384 connection vs USB. I use it for my audio (PC to mixing board) mostly for Sonar.
I found out today during a chat with Adobe that Premiere Elements does not support MOTU. That must be my problem.
I am not trying to capture, just play an AVI in the timeline. The timeline does not move smoothly enough to do that without audio and video problems. However, the same AVI will play in the organizer of Premiere Elements. Also the same AVI also plays in Media Player. I also have no problems with audio or video using YouTube or Vimeo or any video on the web with Chrome or IE 11.
I am using Windows 7 Home Premium 32 bit with Service Pack 1.
828mk3 Hybrid Firewire Audio Interface
I am told that Premiere Pro can support MOTU. I just don't have a 64 bit system for it yet.
Thanks,
Joseph Balsamo

FireWire Audio Heat Problem (Macbook Pro, Late 2008) VIDEO proof

http://www.youtube.com/watch?v=JYHnX3CGUoo
After a lot of hours of trying to figure out WHY my macbook pro heats up (a lot) when i connect my newly bought Apogee Duet firewire audio interface, i found out that actually what was happening is that there are CPU spikes of extremely short period (so short that Activity Monitor and iStat could not catch) constantly spiking the CPU frequency from 1596Mhz (Idle) to 2572Mhz (Maximum). Apart from the frequency spike there is also a VOLTAGE spike from 1.0v to 1.15.
I know that this is normal due to speedstep technologies and such BUT the rapid spiking and alterations of frequency and voltage ALWAYS happening when i have my Firewire audio plugged is not normal to me. There is nothing else running, everything's idle and i only plug the firewire interface.
Also this is not happening when i restrict OSX from loading AppleFWAudio.kext (either by deleting, moving, renaming it). I connect the firewire audio interface, the leds are illuminating but no heat problem (thats to show you that is not because the interface is self-powered)
Whats going on seems to be similar with the problems occurred after Mac Pro Audio Update to users that was using FW audio devices. They were hearing a sine noise coming from their macpro and propably that was because the same thing was happening. Constant spikes of voltage to the CPU. I dont have a macpro thought so i cant apply the update Apple released for that issue.
Also, my macbook is using Lucent / Agere (LSI) firewire chipset (the particular and known revision 6) but i dont think that this is the cause since Apogee didnt have any problems with the chipset
Info: The app im using to monitor the Frequency and Voltage is CoolBook, can be found here: http://www.coolbook.se/CoolBook.html

Firewire Audio disconnected / or AppleFWAudio.kext unloaded = Idle temp arround 50 celcius (iStat)
Firewire Audio Connected with AppleFWAudio.kext loaded = Idle temp arround 60 celcius (iStat)
If theres a possibility that this is due to bus powered firewire device (cause i have an external FW hard drive that is self-powered and temps are not rising when i connect it) then AppleFWAudio.kext maybe manages something with bus powered firewire.
Maybe when i have the interface connected but the kext not loaded the mA sucked by the interface are too little for causing a temp rise but by the time the kext is loaded and the interface is converting audio the mA required tops up so the temp rise comes from the mA load on the firewire bus and not the cpu itself.
*Even if that's the case, the rapid spikes of throttling on the cpu by the time the Firewire Audio interface is connected bothers me. This isn't something that should normaly happen on an idling machine.*

Firewire Audio Static/Distorted

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