[Ardour-Users] dither 32bit to 16bit

Jörn Nettingsmeier nettings at stackingdwarves.net
Thu Dec 10 10:43:42 PST 2009

plutek-infinity wrote:
>> Date: Thu, 10 Dec 2009 08:37:33 -0800 (PST)
>> From: "Don Fredricks" <ardour at handsfull.net>
>> plutek-infinity wrote:
>>> is there a command-line equivalent which could batch-process the files ...?
>> You might try sox. It automatically applies dither when reducing bit
>> depth. You can turn off the automatic dither and apply a "dither effect"
>> if you want more control.
> hmmm.... lots of noise-shaped options in there. i'll have to do some listening tests!
> i wonder if there are any web-published studies of these dithers...

noise-shaped should be good enough. there are variants, but i doubt they
differ much. any dither is better than none, and noise-shaped dither
(or, to a somewhat lesser extent, triangular dither, for that matter)
introduces less audible hiss. watch out, however: noise-shaped dithering
should be the last processing step - if you intend to do more processing
afterwards, the psycho-acoustic effect of the shaping might be lost...

Jörn Nettingsmeier
Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487

Meister für Veranstaltungstechnik (Bühne/Studio), Elektrofachkraft
Audio and event engineer - Ambisonic surround recordings


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