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Chord Hugo - Page 345

post #5161 of 8336


Gotcha :beerchug:

Quote:
Originally Posted by kh600rr View Post


I am of course talking about a review in the Headgear section. biggrin.gif

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post #5162 of 8336

I have a 24-48 hz hd track album oif JD Souther on the ak240 and the Hugo is white saying it is a DSD file. Weird the ak240 shows it 24-48 and Hugo telling me it is DSD it is a flac file also

post #5163 of 8336
Quote:
Originally Posted by Frank I View Post

I have a 24-48 hz hd track album oif JD Souther on the ak240 and the Hugo is white saying it is a DSD file. Weird the ak240 shows it 24-48 and Hugo telling me it is DSD it is a flac file also

No way flac can be dsd file. Some of the colors are subtle on Hugo. Any chance it could be something else?
post #5164 of 8336
Quote:
Originally Posted by Crashem View Post


No way flac can be dsd file. Some of the colors are subtle on Hugo. Any chance it could be something else?

maybe but it looked white and on the ak240 it said 24-48 so who knows.- just tried it again showing white on the Hugo. Aurdirvana show it as a flac 24-48 file so not sure what up but it sounds great anyway- maybe it has a touch of orange and not bright white


Edited by Frank I - 6/19/14 at 10:24pm
post #5165 of 8336
Quote:
Originally Posted by Crashem View Post

No way flac can be dsd file. Some of the colors are subtle on Hugo. Any chance it could be something else?

Not necessarily true, we can encode dsd with a flac file container. Not say this is the case here but dsd on flac is possible.
post #5166 of 8336
Quote:
Originally Posted by kkcc View Post

Not necessarily true, we can encode dsd with a flac file container. Not say this is the case here but dsd on flac is possible.

I don't believe you are right. Flac isn't just file container. It is inherently a PCM based format. PCM stores music differently than DSD. As such, if you "store" a dsd file in PCM, it will not result in a perfect copy in the way you can take a wav file and store as flac. You are actually taking that dsd file and then decoding it and then creating uncompressed PCM version and finally converting that uncompressed PCM data into flac compression.

Some would argue the method in which the music data is stored with dsd/sacd are what gives it it's magic in part. So saving in PCM format loses that magic.
post #5167 of 8336
Quote:
Originally Posted by Crashem View Post


I don't believe you are right. Flac isn't just file container. It is inherently a PCM based format. PCM stores music differently than DSD. As such, if you "store" a dsd file in PCM, it will not result in a perfect copy in the way you can take a wav file and store as flac. You are actually taking that dsd file and then decoding it and then creating uncompressed PCM version and finally converting that uncompressed PCM data into flac compression.

Some would argue the method in which the music data is stored with dsd/sacd are what gives it it's magic in part. So saving in PCM format loses that magic.

 

 

I think kkcc was talking about DoP (DSD over PCM frames): http://dsd-guide.com/dop-open-standard

 

Heres the how to:

http://www.audiocircle.com/index.php?topic=119364.0

post #5168 of 8336
Quote:
Originally Posted by Crashem View Post


I don't believe you are right. Flac isn't just file container. It is inherently a PCM based format. PCM stores music differently than DSD. As such, if you "store" a dsd file in PCM, it will not result in a perfect copy in the way you can take a wav file and store as flac. You are actually taking that dsd file and then decoding it and then creating uncompressed PCM version and finally converting that uncompressed PCM data into flac compression.

Some would argue the method in which the music data is stored with dsd/sacd are what gives it it's magic in part. So saving in PCM format loses that magic.

 

We can do DSD over PCM and encapsulate the data stream in a .flac container.  Detail guide on how to do it with FB2K here:

http://forums.slimdevices.com/showthread.php?99958-DSD-playback-via-Logitechmediaserver-using-Squeezebox-Touch-or-Wandboard

post #5169 of 8336

on the topic of usb isolator, would this one work to reduce ground noise ? http://hifimediy.com/index.php?route=product/product&product_id=122

post #5170 of 8336
Quote:
Originally Posted by seeteeyou View Post
 

 

And I'm somewhat embarrassed to confess that I bought this from someone in Europe since the offer was so tempting, hopefully that's the real deal since it actually costs more than Hugo itself

 

http://www.audiotechnique.com/chc/380/380equipment/crystal.html

Frankie, you are a true audiophile if you terminate this to microusb :tongue_smile::beerchug: Congrats

 

thanks for the resources as always... now you draw my interest in the Rockna Wavedream too..

post #5171 of 8336
Quote:
Originally Posted by kkcc View Post

We can do DSD over PCM and encapsulate the data stream in a .flac container.  Detail guide on how to do it with FB2K here:
http://forums.slimdevices.com/showthread.php?99958-DSD-playback-via-Logitechmediaserver-using-Squeezebox-Touch-or-Wandboard

I get it. So basically using the PCM data set to do PCM DoP type encapsulation which the receiving dac will have to treat it like DoP stream and strip out the PCM headers and use the underlying data as DSD. Sort of using it like AC3 data can be encapsulated in PCM.
post #5172 of 8336
Quote:
Originally Posted by CosmicHolyGhost View Post
 

on the topic of usb isolator, would this one work to reduce ground noise ? http://hifimediy.com/index.php?route=product/product&product_id=122

Should do, I am testing a ADMU based USB isolator in next couple of days to investigate ground induced RF noise.

 

It's only good up to 96 kHz, nobody makes a 480Mb class 2 USB isolator.

 

Rob 

post #5173 of 8336
Quote:
Originally Posted by Crashem View Post


I get it. So basically using the PCM data set to do PCM DoP type encapsulation which the receiving dac will have to treat it like DoP stream and strip out the PCM headers and use the underlying data as DSD. Sort of using it like AC3 data can be encapsulated in PCM.

 

Yes, so one possible scenario on Frank's case is that the FLAC file he has was DoP and thus Hugo is receiving DSD data stream and treat it as such (and hence the white indicator) while the AK240 thinks it's sending out FLAC (but typically DoP via FLAC would result in 24/176 so I'm not sure what happened).  Could also be other reasons but I just wanted to point out the DoP via FLAC possibility.


Edited by kkcc - 6/19/14 at 11:24pm
post #5174 of 8336
Quote:
Originally Posted by seeteeyou View Post

 

And I'm somewhat embarrassed to confess that I bought this from someone in Europe since the offer was so tempting, hopefully that's the real deal since it actually costs more than Hugo itself

 

http://www.audiotechnique.com/chc/380/380equipment/crystal.html


Crikey!! What kinda USB cable is that!? It costs almost as much as my watch :-(!!

 

Quote:
Originally Posted by kkcc View Post
 

 

Yes, so one possible scenario on Frank's case is that the FLAC file he has was DoP and thus Hugo is receiving DSD data stream and treat it as such (and hence the white indicator) while the AK240 thinks it's sending out FLAC (but typically DoP via FLAC would result in 24/176 so I'm not sure what happened).  Could also be other reasons but I just wanted to point out the DoP via FLAC possibility.

 

But this is quite interesting. So hypothetically speaking if Frank I's file is truly a DSD encapsulated into a PCM file, it means Hugo is detecting it after it's removed the encapsulation seeing the DSD format but AK240 detects it before the encapsulation is stripped?

 

This is quite easily tested by explicitly encapsulating a DSD file as per seeteeyou's links to the procedure.

post #5175 of 8336
Quote:
Originally Posted by Rob Watts View Post
 

Should do, I am testing a ADMU based USB isolator in next couple of days to investigate ground induced RF noise.

 

It's only good up to 96 kHz, nobody makes a 480Mb class 2 USB isolator.

 

Rob 


Thanks, Rob. Look forward to read your thoughts regarding this.

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