On Dec 6, 2012, at 6:52 AM, Dan Dugan wrote:
> An attenuator after the converter just throws away good bits. It can't pr=
event converter overload or improve the signal-to-noise. It's only useful f=
or getting a desired level in the recorded file--but if the recordings are =
going through post-production, that's a better place to adjust levels to a =
desired target.
>
> -Dan
I don't have any special knowledge of the actual implementation of these in=
put attenuators that are after the analog-to-digital conversion in some cur=
rent portable recorders.
But if that conversion were to floating point rather than fixed point data,=
and then converted to fixed point after the attenuator, that would seem to=
be a valid way to get the signal in the right gain range for storage in a =
file.
At least that's the guidance that's being put out by the DAW makers who are=
using 32 bit floating point mix engines, some of which now can store files=
as 32 bit floating point as well.
--Flawn
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