Re: Audio recording bitdepth
Re: Audio recording bitdepth
- Subject: Re: Audio recording bitdepth
- From: Bjorn Roche <email@hidden>
- Date: Wed, 9 Dec 2009 14:07:34 -0500
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On Dec 2, 2009, at 5:37 PM, Bjorn Roche wrote:
On Dec 2, 2009, at 10:41 AM, Bjorn Roche wrote:
Hey doug,
Thanks for your response. I find it a bit surprising that drivers
do the int<->float conversions, but I suppose this could be useful
if they can manage that on hardware. Still, Core Audio provides
converters for this purpose, and presumably those are canonical and
maybe could be used by the drivers. I presume that these use power
of 2 multiplication/division as well.
FWIW, many other transforms are bit-transparent as well. I've done
some testing and
2^n
2^(n-1)
and several other transforms are bit transparent up to 24-bits as
well. I will report back when I've posted my results.
Here's my survey of what's happening on other platforms and what's
bit-transparent:
http://blog.bjornroche.com/2009/12/int-float-int-its-jungle-out-there.html
I will be discussion linearity, dither and so on, next.
At the risk of starting a flame war, here is my follow-up:
http://blog.bjornroche.com/2009/12/linearity-and-dynamic-range-in-int.html
bjorn
-----------------------------
Bjorn Roche
XO Wave
Digital Audio Production and Post-Production Software
http://www.xowave.com
http://blog.bjornroche.com
http://myspace.com/xowave
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