Howdy all
Hoping someone can point me in the right direction to resolve the following;
I m getting a horrible digital crackling/distortion occuring every hour or so when recording and mixing.
My set up is as follows:
02r96 > (via adat) Focusrite saffire 26 > (firewire) iMac > ProTools/Logic > then back to 02r96 via the interface's adat outs.
I have been getting around this by turning the interface off, then back on. Once the DAW recognises the interface it functions fine.... for about an hour or so before doing the same.
I assume that the Focusrite is struggling with the audio going in and out back and forward between the console and the DAW???
Any suggestions appreciated.
Thanks
Andy Forssman
- It is currently Sat Apr 20, 2024 5:22 am • All times are UTC + 10 hours [ DST ]
nasty distortion from interface/converters
Moderators: rick, Mark Bassett
12 posts
• Page 1 of 1
Re: nasty distortion from interface/converters
Hi Andy,
just to eliminate the obvious, is the o2r or the saffire the clock master?
just to eliminate the obvious, is the o2r or the saffire the clock master?
Dave Carter
http://www.twitter.com/davecarter
http://www.twitter.com/davecarter
- Text_Edifice
- Valued Contributor
- Posts: 1030
- Joined: Sun Nov 27, 2005 12:00 pm
- Location: Wellington
Re: nasty distortion from interface/converters
I had a similar issue when sharing firewire on an iMac. Do you have anything else happening on the FW buss... hard drive, midi?
My audio interface (Aurora) didn't like to share FW with anything.
It would work ok for a short period, then break down to extreme bit crushed type sound.
My audio interface (Aurora) didn't like to share FW with anything.
It would work ok for a short period, then break down to extreme bit crushed type sound.
Whitten
- ChrisW
- Valued Contributor
- Posts: 1285
- Joined: Thu Jan 29, 2009 12:01 pm
- Location: Hunter
Re: nasty distortion from interface/converters
Also to eliminate another possible cause, try another firewire cable. When they go south, this is often the result
Chris Hallam.
https://soundcloud.com/hallamsound
Whatever floats your boat.
https://soundcloud.com/hallamsound
Whatever floats your boat.
-
Chris H - Forum Veteran
- Posts: 2319
- Joined: Mon May 09, 2005 11:20 am
- Location: Off The Planet
Re: nasty distortion from interface/converters
Thanks for the responses
The clock master is saffire.
As for firewire .. I have external glyph hard drive connected to FW400 (rear of iMac), Saffire connected to FW800 (rear of iMac).
Andy
The clock master is saffire.
As for firewire .. I have external glyph hard drive connected to FW400 (rear of iMac), Saffire connected to FW800 (rear of iMac).
Andy
- andyforssman
- Registered User
- Posts: 27
- Joined: Sun Apr 01, 2012 7:51 am
Re: nasty distortion from interface/converters
If the iMac's are built like the macbook pro's the 400 / 800 ports may share the same bus – is it a recent problem or have you added either the o2r or saffire to your setup recently?
Dave Carter
http://www.twitter.com/davecarter
http://www.twitter.com/davecarter
- Text_Edifice
- Valued Contributor
- Posts: 1030
- Joined: Sun Nov 27, 2005 12:00 pm
- Location: Wellington
Re: nasty distortion from interface/converters
Try increasing the buffer size.
Gian Parodi
It's the first watt that counts
It's the first watt that counts
- Gian
- Frequent Contributor
- Posts: 516
- Joined: Tue Nov 18, 2008 9:38 pm
- Location: Sydney, Australia
Re: nasty distortion from interface/converters
I had a similar distortion problem (with a completely different system) that also went away with a restart - when I clocked the 3 ADACs together using a BNC daisy chain (instead of S/PDIF) it ceased.
Ian Dare
- Drumstruck
- Valued Contributor
- Posts: 1589
- Joined: Fri Sep 17, 2010 12:37 pm
- Location: NSW South Coast
Re: nasty distortion from interface/converters
Is your mac on OSX 10.8?
Chris Hallam.
https://soundcloud.com/hallamsound
Whatever floats your boat.
https://soundcloud.com/hallamsound
Whatever floats your boat.
-
Chris H - Forum Veteran
- Posts: 2319
- Joined: Mon May 09, 2005 11:20 am
- Location: Off The Planet
Re: nasty distortion from interface/converters
In terms of fault finding here's what I'd do (and I apologise if this is pitching way too low).
Make sure you've got the latest version of SaffireControl, firmware etc. and are powering on in the suggested order (interface first, then mac). I'm sure you've done this.
Check your audio midi setup and make sure the saffire is recognised and working as you'd expect (e.g. clock source selection / sample rate matches what you see in SaffireControl).
Pull the harddrive off the fw 400 port (easiest possible fix).
If no good, does the saffire work properly sans O2R? If so the problem is either between or with the O2R (clocking / dodgy adat card or connectors / dodgy d/a converters).
By process of elimination if you're still having problems it's probably the saffire or the the mac and in either case you'll need to either swap out the interface / try it on another machine.
As an aside (and probably not relevant), core-audio can be a bit fussy with FW interfaces if you ask it to do too much at the same time (e.g. running a DAW, iTunes and streaming or buffering audio / video from the web). I've seen this result in bursts of noise / distortion and other weirdness.
Make sure you've got the latest version of SaffireControl, firmware etc. and are powering on in the suggested order (interface first, then mac). I'm sure you've done this.
Check your audio midi setup and make sure the saffire is recognised and working as you'd expect (e.g. clock source selection / sample rate matches what you see in SaffireControl).
Pull the harddrive off the fw 400 port (easiest possible fix).
If no good, does the saffire work properly sans O2R? If so the problem is either between or with the O2R (clocking / dodgy adat card or connectors / dodgy d/a converters).
By process of elimination if you're still having problems it's probably the saffire or the the mac and in either case you'll need to either swap out the interface / try it on another machine.
As an aside (and probably not relevant), core-audio can be a bit fussy with FW interfaces if you ask it to do too much at the same time (e.g. running a DAW, iTunes and streaming or buffering audio / video from the web). I've seen this result in bursts of noise / distortion and other weirdness.
Dave Carter
http://www.twitter.com/davecarter
http://www.twitter.com/davecarter
- Text_Edifice
- Valued Contributor
- Posts: 1030
- Joined: Sun Nov 27, 2005 12:00 pm
- Location: Wellington
Re: nasty distortion from interface/converters
It depends on the audio interface, but some wont share fw with any other device.
I think the iMac fx is one buss.
Only way to quickly test is to remove the Glyph completely (unplug fw cable), then work as you normally do with the Saffire and see if the problem goes away. If it does, you have your culprit.
I'm using an Apollo with my imac and have a Lacie TB drive. I plan to get the Apollo TB card too soon.
I found FW was a hassle on a budget (eg: imac)
I think the iMac fx is one buss.
Only way to quickly test is to remove the Glyph completely (unplug fw cable), then work as you normally do with the Saffire and see if the problem goes away. If it does, you have your culprit.
I'm using an Apollo with my imac and have a Lacie TB drive. I plan to get the Apollo TB card too soon.
I found FW was a hassle on a budget (eg: imac)
Whitten
- ChrisW
- Valued Contributor
- Posts: 1285
- Joined: Thu Jan 29, 2009 12:01 pm
- Location: Hunter
Re: nasty distortion from interface/converters
Thought I'd better update where I am at with this issue. I am still a little unsure as to the actual cause but all seems to be going well since I began turning the interface off then on again before opening PT. Touch wood.
- andyforssman
- Registered User
- Posts: 27
- Joined: Sun Apr 01, 2012 7:51 am
12 posts
• Page 1 of 1
Return to You've gotta start somewhere.
Who is online
Users browsing this forum: No registered users and 1 guest