Avid Pro Audio Community

Avid Pro Audio Community

How to Join & Post  •  Community Terms of Use  •  Help Us Help You

Knowledge Base Search  •  Community Search  •  Learn & Support


Avid Home Page

Go Back   Avid Pro Audio Community > Pro Tools Software > Pro Tools 2018

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 12-10-2018, 05:50 PM
Eric Lambert's Avatar
Eric Lambert Eric Lambert is offline
Member
 
Join Date: Dec 1969
Location: Los Angeles
Posts: 2,881
Default Real time SR conversion via spdif - Avid HD IO

My session is at 48 but an external box is fixed at 44.1 so I'm trying to convert the external box's signal on the way in. I was pretty sure that the Avid HD IOs could convert on-the-fly at the spdif inputs, however, I don't seem to know how to get that working. Selecting sample rate conversion in Hardware Setup doesn't do what I need (the signal still has the incorrect sample rate distortion).

Any ideas? Maybe it won't convert spdif on-the-fly...
Reply With Quote
  #2  
Old 12-10-2018, 06:09 PM
Top Jimmy's Avatar
Top Jimmy Top Jimmy is offline
Moderator
 
Join Date: Oct 2005
Location: Spokane, WA
Posts: 5,332
Default Re: Real time SR conversion via spdif - Avid HD IO

As I recall, the real-time SRC only ever worked for inputs to the digital card, not the ones on the enclosure.

If you had an AES-Dsub cable, you might be able to use a balun to adapt the RCA to XLR. But, while this works just fine with many digital input receiver chips, I don't have first-hand experience with doing this on an Avid interface.


Sent from my iPad using Tapatalk
__________________
James Cadwallader

Hackintosh - Gigabyte Z77X-UP5TH, Intel Core i7-3770K, 32GB 1600Mhz DDR3, 2x SATA 6Gb/s 240GB SSD, 3x SATA 6Gb/s 1TB HDD, 1x Glyph 2TB USB3 HDD, Mojave 10.14.4.

Pro Tools HD Native 2020.3, Focusrite Red 8Pre, Mbox 3 (Mac)
Pro Tools 11.3.2, Mbox2 (Win 7)

Presonus Faderport, Pro Tools | Control
Reply With Quote
  #3  
Old 12-10-2018, 07:06 PM
Eric Lambert's Avatar
Eric Lambert Eric Lambert is offline
Member
 
Join Date: Dec 1969
Location: Los Angeles
Posts: 2,881
Default Re: Real time SR conversion via spdif - Avid HD IO

Yeah, I've thought about converting to AES but was hoping I could avoid that.

Another option is to use the toslink connectors on the hardware unit and the IO, a connector type which *might* offer real-time conversion in ProTools...? Hopefully?
Reply With Quote
  #4  
Old 12-10-2018, 07:40 PM
Top Jimmy's Avatar
Top Jimmy Top Jimmy is offline
Moderator
 
Join Date: Oct 2005
Location: Spokane, WA
Posts: 5,332
Default Re: Real time SR conversion via spdif - Avid HD IO

As long as the output box does ADAT optical you can apply the SRC when using the optical port on the card. Just know, the optical port on the card only does ADAT, it can't be switched to optical S/PDIF.


Sent from my iPad using Tapatalk
__________________
James Cadwallader

Hackintosh - Gigabyte Z77X-UP5TH, Intel Core i7-3770K, 32GB 1600Mhz DDR3, 2x SATA 6Gb/s 240GB SSD, 3x SATA 6Gb/s 1TB HDD, 1x Glyph 2TB USB3 HDD, Mojave 10.14.4.

Pro Tools HD Native 2020.3, Focusrite Red 8Pre, Mbox 3 (Mac)
Pro Tools 11.3.2, Mbox2 (Win 7)

Presonus Faderport, Pro Tools | Control
Reply With Quote
  #5  
Old 12-10-2018, 07:56 PM
albee1952 albee1952 is offline
Member
 
Join Date: May 2004
Location: Norwich, CT
Posts: 35,942
Default Re: Real time SR conversion via spdif - Avid HD IO

What is the "external box"? What are you doing with it? More info might reveal other options, like maybe record the external source to a 44.1K session, then open your 48K session and Import Session Data, and tell PT to apply SRC on import
__________________
Gigabyte X79/intel i7 3930K, 32GB RAM, DIGI003 Rack
https://www.facebook.com/search/top/...0sound%20works


The better I drink...the more I mix.....

BTW, my name is Dave, but most people call me.........................Dave
Reply With Quote
  #6  
Old 12-10-2018, 08:23 PM
Eric Lambert's Avatar
Eric Lambert Eric Lambert is offline
Member
 
Join Date: Dec 1969
Location: Los Angeles
Posts: 2,881
Default Re: Real time SR conversion via spdif - Avid HD IO

It's a UA OX guitar interface (a fantastic box, btw) and it can't output ADAT, only spdif. I could go analog but I'd rather not introduce another D/A and then A/D. I could convert spdif to ADAT with an adapter but that's an expensive product.

This is becoming more of a headache than I expected. My sessions will never be 44.1 -- always 48 or higher -- so something's gotta convert.
Reply With Quote
  #7  
Old 12-10-2018, 08:45 PM
Darryl Ramm Darryl Ramm is online now
Member
 
Join Date: Nov 2010
Location: USA
Posts: 14,639
Default Re: Real time SR conversion via spdif - Avid HD IO

S/PDIF to AES/EBU is likely the easiest path...
Reply With Quote
  #8  
Old 12-10-2018, 09:40 PM
Eric Lambert's Avatar
Eric Lambert Eric Lambert is offline
Member
 
Join Date: Dec 1969
Location: Los Angeles
Posts: 2,881
Default Re: Real time SR conversion via spdif - Avid HD IO

That's my thought, too. I just want to verify that the Avid HD IO will do realtime SR conversions if I connect via AES.
Reply With Quote
  #9  
Old 12-10-2018, 09:44 PM
YYR123's Avatar
YYR123 YYR123 is offline
Member
 
Join Date: Dec 2010
Location: Austin TX
Posts: 13,738
Default Re: Real time SR conversion via spdif - Avid HD IO

Quote:
Originally Posted by Top Jimmy View Post
As I recall, the real-time SRC only ever worked for inputs to the digital card, not the ones on the enclosure.

This is true
__________________
Daniel
HDX - PT12.5.1 - HD I/O 16x8x8
Win10-Pro (v1709)- 6 Core i7-6850k - ASUS X99 Deluxe ii
D-Command Main Unit - 'Ole Blue


http://www.sknoteaudio.com/ plugins rock and are affordable.
Reply With Quote
  #10  
Old 12-10-2018, 09:54 PM
Eric Lambert's Avatar
Eric Lambert Eric Lambert is offline
Member
 
Join Date: Dec 1969
Location: Los Angeles
Posts: 2,881
Default Re: Real time SR conversion via spdif - Avid HD IO

I don't have the added digital IO card, so... that means I'm out of luck with the realtime conversion idea?
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Spdif RCA to Spdif Optical conversion - degradation?? Hollow Body 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Win) 0 02-17-2011 09:21 AM
Real-Time Bounce to Disk...REAL PAIN Brian in Charlotte 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Mac) 201 07-26-2010 09:12 AM
File Conversion-W/O real time play down STUDIO 44 Pro Tools TDM Systems (Mac) 4 08-26-2005 02:54 PM
real time Sample Rate Conversion nukmusic 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Win) 3 11-15-2004 07:46 PM
Capture range for real time SR conversion KK Proffitt Pro Tools TDM Systems (Mac) 0 10-19-2004 02:44 AM


All times are GMT -7. The time now is 05:10 PM.


Powered by: vBulletin, Copyright ©2000 - 2008, Jelsoft Enterprises Limited. Forum Hosted By: URLJet.com