[linux-audio-dev] Paper on dynamic range compression

Steve Harris S.W.Harris at ecs.soton.ac.uk
Wed Oct 18 10:42:20 UTC 2006


On Wed, Oct 18, 2006 at 06:50:39 +1000, Erik de Castro Lopo wrote:
> Its very easy to get carried away with trying to reach some sort
> of audio perfection. Things like upsampling in order to apply 
> compression is over-engineering.

I'm tempted to agree. Particualrly the interpediate peak thing, if the
compressors gain slope is appropriatly shallow then the output waveform
will still have the intermediate peak in it. If your DA converter is
broken, you can't really fix that up in software.

According to a collegue, there was a study of consumer hardware DACs for
this behaviour, and there was a mix of results, some reconstruct the
correct curve, some produce an over, but not correct curve and some clip.
>From what he can remember it mostly depended on the manufacturer.

- Steve



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