Question About Using Ozone's Dithering

Discussion in 'Mastering' started by hunter07, Dec 5, 2011.

  1. hunter07

    hunter07 Active Member

    I've been using Ozone in my DAW as part of the mastering process and had dithering turned on and assumed that the rendered product was going to be 16 bit when selecting 16 bit in Ozone but after rendering a few test Waves of my album I noticed they're all still 24 bit.

    I'm unclear as to whether I should be setting the bit depth to the number I want to render it to or the number of the present wave file and I'm unclear as to whether I need to be selecting 16 bit depth in my DAW itself when I choose to render down the audio file. I have it set to 24 bit depth and assumed that Ozone would make the file 16 bit... so I'm a bit unclear as to which values I need to be using in each instance.

    I'd really appreciate some help here and can clarify if my question is too nebulous.
     
  2. johannes_o

    johannes_o Active Member

    Ozone injects dither noise into the audio signal that will enable truncation without distortion. When having that dither last in the chain you can safely truncate away the last 8 bits but you need to tell your application to do that yourself in most cases – such as by setting the output file resolution to 16 bit.
     
  3. Saluki43

    Saluki43 Member

    What is probably happening is that you are dithering to 16 at the-plug in but you are still writing a 24 bit file with your DAW. You end up with a 24 bit file with 8 zeros producing a 16 bit result, but using 50 more space, you also cannot make a CD with this file. Make sure you are writing the final file at 16 bits from your DAW.
     
  4. bouldersound

    bouldersound Real guitars are for old people. Well-Known Member

    You absolutely must truncate before dithering or dithering is pointless. I haven't been able to confirm that any DAW truncates before applying the master bus inserts, but I doubt it. So for now I will be dithering after bouncing/rendering/exporting my mixes to 16 bit files.
     
  5. IIRs

    IIRs Well-Known Member

    You got this the wrong way around. Dither must be added BEFORE truncation, or it won't work at all.

    Ozone actually does truncate as well as dither, so the output will only have 16 active bits. If you render the result as a 24 bit file the bottom 8 bits will be filled with zeroes and can be safely thrown away by truncating with an editor such as Soundforge. Failing that just render again with the bit depth set to 16 bits, and the DAWs own dither turned off.
     
  6. bouldersound

    bouldersound Real guitars are for old people. Well-Known Member

    Good. One less thing to worry about.
     
  7. Thomas W. Bethel

    Thomas W. Bethel Well-Known Member

    Not true.
     

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