2. digital
  3. 154452-3549

Why you want upsampling and upconversion in a server and why it sounds way better!

One of Roon's and Jrivers best advantages is the ability to digitally reprocess your data. 

With an appropriate server you can take for example a 16 bit 44k Tidal stream and reprocess that data stream to DSD or to reprocess to 24bit 192k, 384k, even up to 768k.

In our tests almost accross the board most listeners perfer DSD or high res PCM data streams.

The counter arguement is that if you start with 16 bit 44k sample you can't do any better as that  is the source.

Going through Facebook we got a post that showed the Lumiere brothers first film shot in 1894 with a steam locomotive. 

The second video showed the same Lumiere video reprocessed using AI to create a 4k video stream out of the same video footage. 

The first video is the native source the second shows the reprocessed video the differences aren't subtitle even if you reprocess the native video you are able to extract a signifigantly higher quality image. 

We have been saying this for years even if you don't start out with a true high res source through the magic of computer reprocessing you can create a pseudo high res data packet that still sound far better than ifs original form.

https://arstechnica.com/science/2020/02/someone-used-neural-networks-to-upscale-a-famous-1896-video-to-4k-quality/

Watch the video and see what you think. Sure it is always best to start with a true high resolution image but in the case of not having a true high resolution music fille the ability to use digital reprocessing can create a signal that will sound far better providing that your dac and server are up to the task.

Dave and Troy
Audio Doctor NJ



 
128x128audiotroy
erik_squires
16,346 posts
 
I remember you saying previously that your Brooklyn gave issues occasionally when switching between differing resolution rates.

Not sure if that is a trait of the Brooklyn though as I cannot say I ever had it happen on my Brooklyn?



I’ve had at least one other person say it happens to them as well, but did not delve further. I’m listening exclusively to PCM via USB. This may not happen over coax or optical. It is not a big enough deal for me to ask it to be fixed, I just hope some day to be able to afford to trade it in for a Manhattan. :)

Also, I have kind of suspicions it has to do with how hot the DAC gets, so I try to leave it elevated and away from the amp.

I know this happens when I hear music, but it sound like beez are buzzing around in the speakers. I have to switch back to whatever mode it is stuck in, and then switch again.

Also, it has done this with a variety of Linux servers and software (Squeezelite, Roon) acting as sources. Would be interesting if this was for instance a Linux driver only sort of issue.
georgehifi's avatar
georgehifi
10,312 posts
 
Good to see you back.
Was a little worried by your absence in light of the fires.
Hope all is well.
It's called the "Sun-burnt Country" I think it's now changed to the "Fire Ravaged Country" and it now looks like we are going to get flooded with extreme rain for over 8 days!!.

Some one said during the fires, the ocean temp 10km off our NSW coast a bit more than a week ago was 29c!!! that's a recipe for tropical cyclones to form, 1st time ever this far south of Queensland.

Who are the ******* idiots! that say "Climate Change" doesn't exist now, all just interested in the mighty $$$ and say **** the planet!

BTW  Australia mourned for the 3 US fire fighters that were KIA helping us fight these fires, and thanks to all their US and Canadian buddies for coming over with them to help with this disaster.

Cheers George   
uberwaltz's avatar
uberwaltz
13,381 posts
 
George.
Pretty much a major disaster and glad you are ok but what a tragedy that can partly be laid at Man's door.

I should keep away from a few threads here where some members are vociferous on climate change being a non issue. What little respect I had was flushed right down the toilet right there and then.

Yes condolences to the families of all who lost their lives in the fire fighting.
And to all those who lost so much in every aspect over in Australia.
uberwaltz's avatar
uberwaltz
13,381 posts
 
Erik

I only ever used coax and toslink so maybe it is a function of the USB input from n the earlier Brooklyn DAC?
erik_squires
16,346 posts
 
maybe it is a function of the USB input from n the earlier Brooklyn DAC?

Maybe.  :) It definitely feels like a software/timing glitch to me. Coax/optical have no handshake. The DAC must continuously monitor the incoming signal and sync to it, unlike USB where there is definitely a handshake and after that the DAC pulls each frame.

Best,

E


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