Locked2017.05 - serious phase issues @ 96 kHz when using VST like AD2 + parallel bus compression

Author
Post
Essentials Only Full Version
Rob[at]Sound-Rehab
Max Output Level: -47 dBFS
  • Total Posts : 2819
  • Joined: 2011/02/03 04:31:35
  • Location: Sound-Rehab, Austria
  • Status: offline
2017/06/11 08:51:05 (permalink)
0

2017.05 - serious phase issues @ 96 kHz when using VST like AD2 + parallel bus compression

I have created a very simple project using a drum clip from AD2 which I sent to a drum bus and from there to a parallel bus for compression.
 
Serious phasing issues occur with basically any compression plug-in (tested 5 different vendors) as soon as the project is run at 96 kHz. Even using a very low CPU plug like boost 11 does not work.
 
Some more observations:
  • Engaging / disengaging the PDC button does not help.
  • If I freeze AD2 VSTi, all is in proper sync. This is very interesting as CPU load in this simple project is not an issue at all (!!!)
  • Note, this does not happen at 44.1 kHz. Simply switch the sample rate on the provided project and all issues are gone.
 
The project can be downloaded at
https://www.dropbox.com/s...%20boost%2011.zip?dl=0
post edited by Rob[at]Sound-Rehab - 2017/06/11 09:35:56

GOOD TUNES LAST FOREVER
  +++   Visit the Rehab   +++
 
DAW: Platinum/X3e, win10 64 bit, i7-3930K (6x3.2GHz), Asus Sabertooth X79, 32 GB DDR3 1600MHz, ATI HD 5450, 120 GB SSD OCZ Agility3, 2x 1TB WD HDD SATA 600
Audio-Interface: 2x MOTU 1248 AVB, Focusrite OctoPre, (Roland Octa-Capture)   Control-Surface: VS-700C 
VSTi: WAVES, NI K10u, FabFilter, IK, ... (too many really) 
#1

3 Replies Related Threads
    muzdol
    Max Output Level: -88 dBFS
    • Total Posts : 104
    • Joined: 2014/11/30 03:00:06
    • Status: offline
    Re: 2017.05 - serious phase issues @ 96 kHz when using VST like AD2 + parallel bus compres 2017/06/11 13:38:38 (permalink)
    0
    Similar issue here. But at 48khz.
    #2
    Rob[at]Sound-Rehab
    Max Output Level: -47 dBFS
    • Total Posts : 2819
    • Joined: 2011/02/03 04:31:35
    • Location: Sound-Rehab, Austria
    • Status: offline
    Re: 2017.05 - serious phase issues @ 96 kHz when using VST like AD2 + parallel bus compres 2017/06/11 17:25:21 (permalink)
    0
    User feedback in another thread indicated that the offset between the bus and the parallel bus is 64 samples (apparently it has happened somewhere else before).
     
    So by adding 64 samples delay to the parallel compression bus, the phasing goes away, meaning the parallel bus is early. PDC not working properly.
     
    Sonar needs to handle this correctly independent of whether AD2 is frozen or not. It's part of proper PDC.
     

    GOOD TUNES LAST FOREVER
      +++   Visit the Rehab   +++
     
    DAW: Platinum/X3e, win10 64 bit, i7-3930K (6x3.2GHz), Asus Sabertooth X79, 32 GB DDR3 1600MHz, ATI HD 5450, 120 GB SSD OCZ Agility3, 2x 1TB WD HDD SATA 600
    Audio-Interface: 2x MOTU 1248 AVB, Focusrite OctoPre, (Roland Octa-Capture)   Control-Surface: VS-700C 
    VSTi: WAVES, NI K10u, FabFilter, IK, ... (too many really) 
    #3
    Jon Sasor [Cakewalk]
    Cakewalk Staff
    • Total Posts : 284
    • Joined: 2014/04/07 10:28:55
    • Location: Boston, MA
    • Status: offline
    Re: 2017.05 - serious phase issues @ 96 kHz when using VST like AD2 + parallel bus compres 2017/06/12 17:57:49 (permalink)
    0
     
    Rob[atSound-Rehab]
    I have created a very simple project using a drum clip from AD2 which I sent to a drum bus and from there to a parallel bus for compression.
     
    Serious phasing issues occur with basically any compression plug-in (tested 5 different vendors) as soon as the project is run at 96 kHz. Even using a very low CPU plug like boost 11 does not work.
     
    Some more observations:
    • Engaging / disengaging the PDC button does not help.
    • If I freeze AD2 VSTi, all is in proper sync. This is very interesting as CPU load in this simple project is not an issue at all (!!!)
    • Note, this does not happen at 44.1 kHz. Simply switch the sample rate on the provided project and all issues are gone.
     
    The project can be downloaded at
    https://www.dropbox.com/s...%20boost%2011.zip?dl=0





    Thanks for the report.  We'll log this and ping you through our bug tracking system if additional info is needed.

    Jonathan Sasor
    Quality Assurance Engineer 
    BandLab
    #4
    Jump to:
    © 2024 APG vNext Commercial Version 5.1