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-   -   Hi-end DSP based multi-channel integrated Preamp/Crossover/DAC project (https://www.diyaudio.com/forums/vendor-s-bazaar/264743-hi-dsp-based-multi-channel-integrated-preamp-crossover-dac-project.html)

Hydrogen Alex 9th October 2019 08:36 AM

Quote:

Originally Posted by Omholt (https://www.diyaudio.com/forums/vendor-s-bazaar/264743-hi-dsp-based-multi-channel-integrated-preamp-crossover-dac-project-post5936772.html#post5936772)

May actually develop a DSP myself as I know it can be done as much lower sales price. Even selling a complete product with Audioweaver and powerful processor could be sold for considerably less with a decent mark up.

Please PM re this.... I have already started on this and maybe we can combine our resources?

mickiboi007 9th October 2019 10:25 AM

Quote:

Originally Posted by Hydrogen Alex (https://www.diyaudio.com/forums/vendor-s-bazaar/264743-hi-dsp-based-multi-channel-integrated-preamp-crossover-dac-project-post5938783.html#post5938783)
Please PM re this.... I have already started on this and maybe we can combine our resources?


Really? This is how you behave?

Tranquility Bass 9th October 2019 12:11 PM

Quote:

Originally Posted by Hydrogen Alex (https://www.diyaudio.com/forums/vendor-s-bazaar/264743-hi-dsp-based-multi-channel-integrated-preamp-crossover-dac-project-post5938783.html#post5938783)
Please PM re this.... I have already started on this and maybe we can combine our resources?

OK I am really happy for you. Now can you take this discussion somewhere else or start your own thread. :(

mk1classic 9th October 2019 03:04 PM

Please elaborate more around the topic "External DSP software capability"

Do you have more information on how to implement an external PC? Hardware, software requirements etc?
I'm look at implementing FIR filters from Audiolens through an external PC. Can this be on a optimized LINUX unit with more or less only a Convolver running? Or will I need a Win10 unit with additional software?

Edit: and yes, I've read this page UPP – Analog-Precision :)

Quote:

Originally Posted by Tranquility Bass (https://www.diyaudio.com/forums/vendor-s-bazaar/264743-hi-dsp-based-multi-channel-integrated-preamp-crossover-dac-project-post5937494.html#post5937494)
....

The UP+ is both hardware and software agnostic to any PC connected to it so compatibility should not be an issue.

cheers
david


Kjeldsen 9th October 2019 04:31 PM

It's cheap compared to Trinnov Amethyst

Tromperie 9th October 2019 11:04 PM

Quote:

Originally Posted by mickiboi007 (https://www.diyaudio.com/forums/vendor-s-bazaar/264743-hi-dsp-based-multi-channel-integrated-preamp-crossover-dac-project-post5938851.html#post5938851)
Really? This is how you behave?

Apparently yes and it is disgraceful. Doing so on a vendor's page too without any regard to them.

More for the Ignore list. I don't want to read anything from people with dubious ethics.

Tranquility Bass 9th October 2019 11:19 PM

Quote:

Originally Posted by mk1classic (https://www.diyaudio.com/forums/vendor-s-bazaar/264743-hi-dsp-based-multi-channel-integrated-preamp-crossover-dac-project-post5939105.html#post5939105)
Please elaborate more around the topic "External DSP software capability"

Do you have more information on how to implement an external PC? Hardware, software requirements etc?
I'm look at implementing FIR filters from Audiolens through an external PC. Can this be on a optimized LINUX unit with more or less only a Convolver running? Or will I need a Win10 unit with additional software?

Edit: and yes, I've read this page UPP – Analog-Precision :)

I should have also mentioned linux running on a PC which I assume can talk to audio devices across a USB interface ;) Have not tried all of these other combinations but certainly have had results on a Windows 7 PC.

The whole idea is to take a commercial or 3rd party audio processing software and run it on a PC or MAC hardware platform etc. That way you offload the DSP capability from the onboard DSP and can now run 3rd party apps in a transparent way as though it was running on the Preamp hardware.

One of the frequently asked questions is how many taps can the onboard DSP handle for the purpose of running FIR filters and/or room correction or group delay correction filters etc. With the external DSP capability this is no longer a limit ;)

cheers
david

mickiboi007 10th October 2019 09:59 AM

Quote:

Originally Posted by Kjeldsen (https://www.diyaudio.com/forums/vendor-s-bazaar/264743-hi-dsp-based-multi-channel-integrated-preamp-crossover-dac-project-post5939192.html#post5939192)
It's cheap compared to Trinnov Amethyst

And it won't even do a 3 way active stereo. It only has 4 outputs.

I don't know if you can string 2 of these together to get the required number of outputs but that would make the setup over 4 times the price of the UP2.

The DEQX would also need 2 of their HDP4/5 or Premate to get a 4 way active. You are well over US10k. Outdated design using 1995 technology. No matter how you look at it the UP is not an expensive bit of gear. The others are.

Sjef 10th October 2019 10:59 AM

Quote:

Originally Posted by mickiboi007 (https://www.diyaudio.com/forums/vendor-s-bazaar/264743-hi-dsp-based-multi-channel-integrated-preamp-crossover-dac-project-post5939887.html#post5939887)
And it won't even do a 3 way active stereo. It only has 4 outputs.

I don't know if you can string 2 of these together to get the required number of outputs but that would make the setup over 4 times the price of the UP2.

The DEQX would also need 2 of their HDP4/5 or Premate to get a 4 way active. You are well over US10k. Outdated design using 1995 technology. No matter how you look at it the UP is not an expensive bit of gear. The others are.

Yes, the DEQX might be a bit outdated technology and there is not much development going on but what amazes me is that after all these years it is still the only DSP crossover I know off that has such an easy way of implementing linear phase crossovers. I have been looking for a very very long time for a replacement unit and the Analog Precision UP comes close but the lack of easy implemented linear phase crossovers might be a showstopper for me. In 2019 such a thing should be very easy to implement, DEQX did it back in 2001. I know linear phase crossovers can be made with convolution filters but that is really a hassle. With the DEQX it is as easy to implement as a Linkwitz or Butterworth crossover. That's something I won't give up that easy. I know the UP can do much more but I have been using a DEQX crossover for 15 years and I have become so very used to linear phase crossovers that I don't ever want to use anything else anymore. So if anyone can point me out how to easily implement them in AudioWeaver without external convolution then I'm highly interested in the UP. I would also appreciate it if someone can tell me it can't be done easily, in that case, I think I'll skip this opportunity. FIR or LIR crossovers are a must for me in a 2019 highend device.

Tranquility Bass 10th October 2019 01:21 PM

Quote:

Originally Posted by Sjef (https://www.diyaudio.com/forums/vendor-s-bazaar/264743-hi-dsp-based-multi-channel-integrated-preamp-crossover-dac-project-post5939920.html#post5939920)
Yes, the DEQX might be a bit outdated technology and there is not much development going on but what amazes me is that after all these years it is still the only DSP crossover I know off that has such an easy way of implementing linear phase crossovers. I have been looking for a very very long time for a replacement unit and the Analog Precision UP comes close but the lack of easy implemented linear phase crossovers might be a showstopper for me. In 2019 such a thing should be very easy to implement, DEQX did it back in 2001. I know linear phase crossovers can be made with convolution filters but that is really a hassle. With the DEQX it is as easy to implement as a Linkwitz or Butterworth crossover. That's something I won't give up that easy. I know the UP can do much more but I have been using a DEQX crossover for 15 years and I have become so very used to linear phase crossovers that I don't ever want to use anything else anymore. So if anyone can point me out how to easily implement them in AudioWeaver without external convolution then I'm highly interested in the UP. I would also appreciate it if someone can tell me it can't be done easily, in that case, I think I'll skip this opportunity. FIR or LIR crossovers are a must for me in a 2019 highend device.

I'm curious to know what happens to the phase at the listening position after you take into account the effects of the environment and room acoustics ?? Is it still linear ?

cheers


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