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News: Dec. 31, 2012 : XXHighEnd + Phasure NOS1 DAC receive 6moons Blue Moon Award !
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 81 
 on: May 04, 2017, 12:38:58 am 
Started by arvind - Last post by jabbr
You may get the idea that I'm a fan of keeping my upsampling workstation away from the electronics using an Ethernet  Wink

Haha... I remember trying to convince Peter to go the NAA route some 4 years ago:

So where does this leave us? Hereís my ultimate dream setup:

- main PC with W7/W8 (shouldnít matter at all)
- although HQPlayer is cable of excellent SQ, and even though most of the controls in the Settings area should become obsolete, Iíd rather use XX
     - I prefer the library management
     - I really, really want to use phase alignment
- of course, the NOS1 DAC Ė itís simply the best Iíve heard

What would it take to achieve this dream setup? Obviously, Peter and Miska (Jussi) need to work together on it, and find a mutually beneficial way to do this. There would need to be appropriate drivers made for the NOS1 to work under Linux. And I think thatís it...

But a lot has changed since then. With the Mach II audio PC, I'm not sure an NAA is necessary now. And in any event, without a Linux driver, we can't use our NOS1s with an NAA.

But USB remains to total PITA, and if ethernet is the ultimate solution, we should pursue it. But audio PC -> ethernet -> NOS1 is surely the way to go (as indeed you seem to suggest).

Mani.

You are on to something. The "NAA" is a small program that implements an audio driver remoting protocol that accepts Ethernet packets, buffers them, and writes them to the audio driver. It also queries the driver to make it appear as if it were locally  attached to HQPlayer ... in the case of XXHE or any other audio program for that matter, a remoting layer could appear as an audio device driver and send the packets across the network as opposed to the USB cable. The difference is that fiberoptic Ethernet could travel kms without concern... and if 1 Gbe isn't fast enough there's 100Gbe and higher.
So Ravenna does all this but at significant cost. We could do the same with regular Ethernet & software.
The endpoint could run Windows but there are chips that combine ARM & FPGA (Zynq) and so everything can be done with one part and that reduces development cost dramatically (there is still the programming)

Now Miska ideally would cooperate on an open "NAA" protocol or maybe he would give Peter the specs, or else a similar protocol could be developed.

Jonathan

 82 
 on: May 03, 2017, 11:48:50 pm 
Started by arvind - Last post by Robocop
Quote
I think I have been the very first (and only one for a longer time) who ever back on CA expressed how lousy USB was (for all of the reasons people, now 8 years later start to find out and complain about)

Interesting comment. As it appears that current owners of some new Dacs much prefer I2s with HDMI.

USB certainly has spawned a number of devices to overcome USB issues/ re connections with computers, not with standing the "Intona" and now the "Phisolator".

I'm all for a better connection.

Robert




 83 
 on: May 03, 2017, 07:38:39 pm 
Started by arvind - Last post by manisandher
You may get the idea that I'm a fan of keeping my upsampling workstation away from the electronics using an Ethernet  Wink

Haha... I remember trying to convince Peter to go the NAA route some 4 years ago:

So where does this leave us? Hereís my ultimate dream setup:

- main PC with W7/W8 (shouldnít matter at all)
- although HQPlayer is cable of excellent SQ, and even though most of the controls in the Settings area should become obsolete, Iíd rather use XX
     - I prefer the library management
     - I really, really want to use phase alignment
- of course, the NOS1 DAC Ė itís simply the best Iíve heard

What would it take to achieve this dream setup? Obviously, Peter and Miska (Jussi) need to work together on it, and find a mutually beneficial way to do this. There would need to be appropriate drivers made for the NOS1 to work under Linux. And I think thatís it...

But a lot has changed since then. With the Mach II audio PC, I'm not sure an NAA is necessary now. And in any event, without a Linux driver, we can't use our NOS1s with an NAA.

But USB remains to total PITA, and if ethernet is the ultimate solution, we should pursue it. But audio PC -> ethernet -> NOS1 is surely the way to go (as indeed you seem to suggest).

Mani.

 84 
 on: May 03, 2017, 05:28:49 pm 
Started by arvind - Last post by jabbr
Welcome jabbr!

Yes, a warm welcome from me too.

So jabbr, you found this a 100 times faster than I imagined, although I was sure that at one day you'd find my post about the interface. Of course it was very coincidental that I could write about it and that in combination with Arvind's question and your NOS1a arriving at the very same day. However :

What I do not want is that you see this (interface) as some sort of obligation. I only said it out of appreciation in combination which your desire to create such a thing and indeed maybe (all of) our wishes to have something different than stupid USB. FYI : I think I have been the very first (and only one for a longer time) who ever back on CA expressed how lousy USB was (for all of the reasons people, now 8 years later start to find out and complain about).
Anyway, I know as a first how "we" can like to do/develop things, but that it is always the lack of time which prevents it.

Quote
I happen to have a very small stash [of PCM1704s] (8 or 16) sitting on the shelf for a very very rainy day

So ... Of course that was challenging me a little, as I already knew that jabbr had these around, and he already knew how many we have laying around over here. But about the former ... these things can take years, until it is finally done or you give up.
So jabbr, don't feel pressed but when will it be ready ?
Nah, kidding !!

Peter

Thank you. Happy

My prototype board is onsite and working on the driver which is the hardest part for me. The initial prototype will run an embedded ARMv7 based Linux which is most convenient for all the control logic ... so I'm knee deep learning how to write an ALSA kernel driver... that driver controls the FPGA and takes care of sending Ethernet frames from the network buffer to the FPGA using DMA.

The advantage is that my sims tell me the chip will use like 1.5W so battery or supercap supply shouldn't be an issue.

In the meantime I'm using a ClearFog base as a network audio adapter (NAA) which is also ARMV7 based. I'd like to be able to compare side by side, but I can also repurpose my old(er) Celeron NAA to run Windows using iSCSI boot.

You may get the idea that I'm a fan of keeping my upsampling workstation away from the electronics using an Ethernet  Wink

 85 
 on: May 03, 2017, 09:17:46 am 
Started by arvind - Last post by PeterSt
Welcome jabbr!

Yes, a warm welcome from me too.

So jabbr, you found this a 100 times faster than I imagined, although I was sure that at one day you'd find my post about the interface. Of course it was very coincidental that I could write about it and that in combination with Arvind's question and your NOS1a arriving at the very same day. However :

What I do not want is that you see this (interface) as some sort of obligation. I only said it out of appreciation in combination which your desire to create such a thing and indeed maybe (all of) our wishes to have something different than stupid USB. FYI : I think I have been the very first (and only one for a longer time) who ever back on CA expressed how lousy USB was (for all of the reasons people, now 8 years later start to find out and complain about).
Anyway, I know as a first how "we" can like to do/develop things, but that it is always the lack of time which prevents it.

Quote
I happen to have a very small stash [of PCM1704s] (8 or 16) sitting on the shelf for a very very rainy day

So ... Of course that was challenging me a little, as I already knew that jabbr had these around, and he already knew how many we have laying around over here. But about the former ... these things can take years, until it is finally done or you give up.
So jabbr, don't feel pressed but when will it be ready ?
Nah, kidding !!

Peter

 86 
 on: May 03, 2017, 08:08:45 am 
Started by arvind - Last post by manisandher
We have a brand new NOS1a owner in our midst somewhere (so far he hides) who is going to make us such an interface.

From CA:

Quote
I happen to have a very small stash [of PCM1704s] (8 or 16) sitting on the shelf for a very very rainy day Happy Maybe @PeterSt will trade me an NOS1a for my stash :rotfl:

Ah, so you did take these off Jonathan's hands for a NOS1?

Welcome jabbr!

Mani.

 87 
 on: May 03, 2017, 07:55:28 am 
Started by arvind - Last post by arvind
Well I hope this topic leads to something worthwhile.

 88 
 on: May 03, 2017, 07:50:14 am 
Started by Gerard - Last post by arvind
Great. I'm sure you'll find an improvement in the SQ.

Cheers

 89 
 on: May 03, 2017, 05:28:03 am 
Started by Gerard - Last post by zackthedog
Everybody too much !

I have it all working  Happy Everything disconnected from my Audio pc and the laptop takes over  Wink

This sure was the most difficult thing i did on a pc.  Happy

Thank you all!!

 Happy

Congratulations!

 90 
 on: May 03, 2017, 03:10:59 am 
Started by briefremarks - Last post by briefremarks
I could not resist posting another view.

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