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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)

chalkandtalk 13th November 2014 07:30 AM

Just what I want. Great project.

MBA 13th November 2014 09:58 AM

Wow - that is really appealing! I am keen to see the other boards and the control of this jewel - keep on!

soekris 13th November 2014 10:47 AM

We should work together.... I have discrete R-2R DAC modules and will follow up with reference ADC modules, no sigma delta here....

I'm strong at hardware and manufacturing, but no nothing about DSP programming.

Btw, exactly what DSP are you planning to use ?

potstip 13th November 2014 11:25 AM

Omg. Perfect partnership. Soren R-2R DAC is far better than ES9018 Sabre DAC.

ogie 13th November 2014 11:36 AM

I bet the Auto guys will love this... which is a huge market.

Tranquility Bass 13th November 2014 11:43 AM

Quote:

Originally Posted by jcga (https://www.diyaudio.com/forums/vendor-s-bazaar/264743-hi-dsp-based-multi-channel-integrated-preamp-crossover-dac-project-post4120492.html#post4120492)
Again, the hardware described here looks to me like the best I've seen so far but I would point that the software/firmware will be as crucial as the hardware to get the benefit(success) of it.

And to answer to someone else, pointing that the power is too much for the home use, I'm running active loudspeakers for the past 20 years or so and yes FIR filters and first room modes corrections need a lot of DSP power.

JC

This is true. The hardware and its revisions are one milestone in the design process but is usually complete after one or two revisions. On the other hand software is an ongoing process which is never quite finished. As long as you work within the limits of the hardware the firmware is what defines the product capability and functionality.

cheers

Tranquility Bass 13th November 2014 11:51 AM

Quote:

Originally Posted by soekris (https://www.diyaudio.com/forums/vendor-s-bazaar/264743-hi-dsp-based-multi-channel-integrated-preamp-crossover-dac-project-post4120647.html#post4120647)
We should work together.... I have discrete R-2R DAC modules and will follow up with reference ADC modules, no sigma delta here....

I'm strong at hardware and manufacturing, but no nothing about DSP programming.

Btw, exactly what DSP are you planning to use ?

I was tossing up whether or not I should have the DAC and ADC on a separate board that plugs into the DSP board using a suitable header. But having it all on the one board means simplified distribution of the ultra-low jitter master clock. This is why I chose the ES9018 Sabre DAC which has 8 DAC channels in one compact package ;)

There is the possibility of having another more universal design where the DAC is on a separate daughter-board allowing different DAC's to be used. I will add this to the to-do list ;)

I am using the Analog Devices ADSP-21489 DSP ;)

cheers

soekris 13th November 2014 12:25 PM

What about those other 8 boards you were talking about ?? My R-2R board can take a balanced LVDS clock directly into the FPGA, so clock quality should not be a problem....

On the other hand, I'm mostly interested in additional DSP power, good software and an user interface, so I could then easily make a board with the same DSP, and then modular DAC and ADC modules :-) Assuming you're interested in sharing DSP code, on DIY or commercial basis....

Btw, what are you planning for there, commercial project, open source or combinations ?
Are you planning for actual production, assuming enough interest ?

kuribo 13th November 2014 12:30 PM

now this is getting really interesting!

Studio Au 13th November 2014 12:49 PM

Watching with interested ears.


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