Phase problems after Processing SD2 file with TComp/EXP

Discussion in 'Mastering' started by Alécio Costa - Brazil, Sep 30, 2003.

  1. Alécio Costa - Brazil

    Alécio Costa - Brazil Well-Known Member

    Joined:
    Mar 19, 2002
    Phase problems after Processing SD2 file with TComp/EXP

    Hi!
    I was "mastering" a Horn band album a few hours ago and then I faced this problem..
    My client, the conductor, felt he conducted with a too low bpm.. yes, after almost 6 months of recording/editing/ production´s day 01....

    Ok, I could do the TC exp to every single track..OH My God...

    Examining the final SD2 44k/24 bit PT 5.1.1 TDM file (Mix system) which sounded ok before TComp/ exp... Phase was fine too.

    I processed the file with Digirack´s Tcomp/exp audiosuite plug-in and then, it started sounding quite funny in Mono.

    Phase read-out at PAZ becomes agressivelly anti-phase.
    So.. any ideas besides re-recording everything or TC/exp each individual track?

    Would you recommend me any other TC/EXP plug?
    I don´t think the junior mastering Waves are adding so much phase problems because everything sounded fine before the audiosuite processing.

    BTW.. I was increasing speed from (varies from 103 to 109) to +2.5%.
    Maybe are the random speed bumps/breaks that "damage " the phase?

    Thanks in advance
    Nice week
    :s:
     
  2. Alécio Costa - Brazil

    Alécio Costa - Brazil Well-Known Member

    Joined:
    Mar 19, 2002
    I never imagined this audiosuiteg plu could be so awful for some cases.
    I´ve just tried with Pitch n´time and the final result is 80% better!
    Is there any other plug you guys would recommend me over this?
    Thanks
     
  3. invisibl

    invisibl Guest

    Hey Alecio.

    Yes unfortunately i think you will need to go back and do this speed ramp in the Orig session.
    Some suggestions if I may.

    Use the serato plug.
    Strap any mono tracks and treat them as stereo.
    Find someone with Digital performer and try the timecomp/exp function there. VERY good.
    Did you try the the process on the Stereo file?
    Also ( and this is time consuming) try a prog like SONICWORX.

    I will think some more and hopefully someone here will come up with a helpful answer.

    Best of luck.
     
  4. Alécio Costa - Brazil

    Alécio Costa - Brazil Well-Known Member

    Joined:
    Mar 19, 2002
    many thanks. I have just used Pitch ´n time with the stereo file. It is really good. I avoid to bash gear but digirack´s tc exp was a disaster.
    I will save the nice info you posted here.
    :)
     
  5. Michael Fossenkemper

    Michael Fossenkemper Distinguished past mastering moderator Well-Known Member

    Joined:
    Sep 12, 2002
    Location:
    NYC New York
    Home Page:
    Strings are the hardest thing to time-compress. They are very complex waveforms with lots of overtones and harmonics. Not to mention that they sustain and any fluctuation is very noticeable. Once I found that dumping the mix to 1/2", vari-speeding it to the tempo I wanted and then pitch-shifting it down sounded the best. Some other times I found that doing it in small steps worked better. It's really a trial an error process with strings.
     
  6. Alécio Costa - Brazil

    Alécio Costa - Brazil Well-Known Member

    Joined:
    Mar 19, 2002

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