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Re: Hello and a Sony PCM D100 question

Subject: Re: Hello and a Sony PCM D100 question
From: picnet2
Date: Fri Jun 20, 2014 4:48 am ((PDT))
Hi Vicki,               The recorder doesn't reduce noise as in "noise redu=
ction" (using DSP or software techniques) - it increases the SNR by using t=
wo converters per channel. Consider this the same as using two microphone c=
apsules rather than one. By using two capsules on the same channel assuming=
 they are near identical we sum the coherent signal and obtain 6 dB level i=
ncrease, the incoherent noise also sums by 3 dB this (6 db signal minus 3 d=
b noise gives 3 dB benefit from using either two capsules in parallel OR tw=
o analog to digital converters) The SNR increases by 3 dB when compared to =
the single capsule or ADC. The original Sony D50 used the 2nd ADC for the l=
imiter. The new D100 gives the option of either using them the same as the =
D50, or combining both converters to obtain increased SNR - quite a neat tr=
ick really.  =0D

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