[Top] [All Lists]

Re: Hello and a Sony PCM D100 question

Subject: Re: Hello and a Sony PCM D100 question
From: picnet2
Date: Fri Jun 20, 2014 5:05 am ((PDT))
Hi David,               Sony has two techniques, the first is noise shaping=
 via "Super bit mapping" - this is used if the record bit depth is 16 bit -=
 basically uses noise shaping/dithering to shove the noise above 20 Khz. If=
 24 bit is used the SBM is disabled. The SN100 I described in the response =
to Vicki. =0D
 Why is DSD better? - Tough question and Ive been trying to convince myself=
 "it is" but have yet to prove that with DSD64. I'd like to demonstrate DSD=
64 (2.8 Mhz) vs PCM @ 48 and 96 Khz in the field to see if there really is =
any practical advantage - I tried this on the beech in Whitesands / Wales a=
nd came to the conclusion the recording was identical - Ill make a short si=
de by side of surf, or choose something local. One reason may be the "raw" =
nature of the format, but if this requires special conversion software that=
 takes time to generate PCM from DSD its less than ideal, also lack of (fre=
e) editing software to handle DSD directly swings the needling in favour of=
 PCM. =0D
 3.5mm sockets I don't consider as a "toy", the D100 using PIP converted AT=
3032 capsules gives a self noise of 10.5 dBA with similar performance as us=
ing the same mics on a phantom power recorder. The noise floor of the recor=
der is sufficiently low for all but low sensitivity dynamic mics and I solv=
ed that with a PIP preamp for dynamics thus I have no reason (personally) t=
o use the Fostex FR2LE + XLR cabling.  =0D

<Prev in Thread] Current Thread [Next in Thread>

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the naturerecordists mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU