Hi-end DSP based multi-channel integrated Preamp/Crossover/DAC project - Page 2 - diyAudio
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Old 13th November 2014, 07:30 AM   #11
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Just what I want. Great project.
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Old 13th November 2014, 09:58 AM   #12
MBA is offline MBA  Czech Republic
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Wow - that is really appealing! I am keen to see the other boards and the control of this jewel - keep on!
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Old 13th November 2014, 10:47 AM   #13
soekris is online now soekris  Denmark
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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 ?
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Last edited by soekris; 13th November 2014 at 10:53 AM.
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Old 13th November 2014, 11:25 AM   #14
potstip is offline potstip  Turkey
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Quote:
Originally Posted by soekris View Post
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 ?
Omg. Perfect partnership. Soren R-2R DAC is far better than ES9018 Sabre DAC.
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Old 13th November 2014, 11:36 AM   #15
ogie is offline ogie  United States
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I bet the Auto guys will love this... which is a huge market.
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Old 13th November 2014, 11:43 AM   #16
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Originally Posted by jcga View Post
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.

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Old 13th November 2014, 11:51 AM   #17
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Quote:
Originally Posted by soekris View Post
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
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Old 13th November 2014, 12:25 PM   #18
soekris is online now soekris  Denmark
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Quote:
Originally Posted by Tranquility Bass View Post
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
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 ?
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Old 13th November 2014, 12:30 PM   #19
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now this is getting really interesting!
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Old 13th November 2014, 12:49 PM   #20
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Watching with interested ears.
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