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In Reply to: RE: DSD Numbers. posted by Disbeliever on February 19, 2017 at 07:28:07
" I assume Sony XA5400ES SACD player incorporates one digital filter ?"
No it actually has three as far as I can deduce. It uses an 8x oversampling filter for redbook discs so as to present the resultant data to the final conversion stage at a similar rate to that of SACD. However as the frequency responses for CD and SACD are specified as different (as they have to be - oversampling and upsampling adds no data), I conclude that different digital filters are used for each of the formats (as is the usual case with CD/SACD players). However I may be wrong as I can find no information on this. If I am it therefore has two filters.
So in this example I guess that use of the word " requires" rather than just " has" would be appropriate as all the filters are necessary for the operation of the machine and are not user selectable.
However you referred to Sony digital processors with no digital filters, rather than one, in your earlier message and that is what my query was about.
I can not find where you say I posted Sony digital processors with no digital filters ?
Here is your post
"In Reply to: RE: DSD Numbers. posted by PAR on February 18, 2017 at 08:05:07:
I have heard dCs expensive components and still prefer Sony who have either one or no filters. When I had the obese Marantz SA7-S1 despite its filters I found none satisfactory ?"
You clearly say you prefer sony which has 0ne or no filters
It is your posting at 09:19:38 on 18th February in which you said :
" I have heard dCs expensive components and still prefer Sony who have either one or no filters ".
I meant their SACD player
The trouble is identifying what is the reason for your preference. Is it the filter? Is it jitter? Is it the I/V circuit? Or is it something else?
" The trouble is identifying what is the reason for your preference. Is it the filter? Is it jitter? Is it the I/V circuit? Or is it something else?"
Yes indeed. Particularly when a system like a full four box dCS stack has the possibility of numerous permutations of several relevant factors. And let's not forget that, whatever the form the digital processing took, the actual sound largely comes post processing from the analogue output stage.
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