Dithering twice

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eturnol
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Joined: Fri Mar 19, 2004 12:15 am

Dithering twice

Post by eturnol » Fri Oct 20, 2006 5:38 pm

Hi,

When you have a Mastering program like ozone and the option to Dither to 16 bits, does the song essentially get dithered twice to 16 bits when you render it in live?

I noticed horrible distortion in my low end when i turned dithering on in ozone, and i am assuming that it was dithered once in ozone, then again in live. there is no clipping in my song, it never goes above 0 db.

when i turned off the dithering in ozone and just kept live's dithering, the distortion went away completely. can i turn off live's dithering? i think ozone's dithering is much more flexible

ben

yogz
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Location: Paris

Post by yogz » Fri Oct 20, 2006 7:49 pm

hi,

by nature dithering should be only done once.
some pro plugins (waves_dither,L2) allow some differents dithering modes allowing several dithering.
I don't know about this in the ozone.
hope it helped :wink:

ben
Live 7.0.14
Mac osX 10.5.6 ;

djsynchro
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Post by djsynchro » Fri Oct 20, 2006 8:31 pm

Live doesn't dither! Search the forum for "dither"

melocoton
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Post by melocoton » Fri Oct 20, 2006 8:38 pm

Dithering just adds noise right? So dithering twice just raises the noise floor a little higher. It shouldn't cause distortion in the low end. But yeah, Live does no dithering anyway (unless they changed something in 6) so you're not dithering twice.

eturnol
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Joined: Fri Mar 19, 2004 12:15 am

Post by eturnol » Sat Jan 27, 2007 7:05 pm

if live doesnt dither, then how does it downconvert the sample rate from 24 bits per sample to 16 bits per sample. it would have to dither, or do something like truncate the excess data down to make 16 bits. there's no other way.

i would like the option to turn off all sample rate choices when rendering my final track, letting my mastering software do the final dithering for me.

when i choose 24 bits in lives rendering window, and let ozone dither down to 16 bits, i still get a final file in 24 bits. but when i choose 16 bits, i still believe the file is being dithered, rounded or truncated twice. this might or might not be introducing some errors into the final file, but i would like the option to turn the dithering (or whatever it may be) in lives rendering window.

Tarekith
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Post by Tarekith » Sat Jan 27, 2007 7:11 pm

You said it yourself, it doesn't dither, so it must just truncate.

I agree that it's not ither messing with your lowend, most dither is noise-shaped to be out o the range of human hearing, and even if it's not, it's way too quiet to be noise you can hear at normal volumes.

tylenol
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Post by tylenol » Sat Jan 27, 2007 8:44 pm

eturnol wrote:if live doesnt dither, then how does it downconvert the sample rate from 24 bits per sample to 16 bits per sample. it would have to dither, or do something like truncate the excess data down to make 16 bits. there's no other way.

i would like the option to turn off all sample rate choices when rendering my final track, letting my mastering software do the final dithering for me.

when i choose 24 bits in lives rendering window, and let ozone dither down to 16 bits, i still get a final file in 24 bits. but when i choose 16 bits, i still believe the file is being dithered, rounded or truncated twice. this might or might not be introducing some errors into the final file, but i would like the option to turn the dithering (or whatever it may be) in lives rendering window.
Live really doesn't dither (at one point I found an ableton programmer on these boards saying that, though I don't have the link handy). So it's almost certainly truncating, and if it's truncating something that's already been dithered, it's truncating zeros.

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