Jump to content

Open architecture DSP as a DAC


Recommended Posts

Hi guys,

 

I am considering using an open architecture DSP such as a the Q-SYS Core 8 Flex to feed PC audio to various devices such as a headphone tube amp, headphone solid state amp, active monitors and sub and a black ice audio expander.

 

Would this be a good idea in terms of audio quality? What should I be looking out for in terms of specifications.

 

Noting that I am capable of programming Biamp and Q-SYS DSPs.

 

Thanks.

Link to comment
Share on other sites



The first question you need to ask yourself is whether you want linear phase FIR or minimum phase IIR. If you want lin phase FIR, you will need more computing power. Something like a Raspberry Pi has enough CPU power to do 64k taps at 48kHz for 2 channels. I believe some people are able to do more. 

 

If you want min phase IIR, these are usually mixed phase (IIR at the bottom, FIR at the top). Find out how many biquads and taps. The more you have, the finer you will be able to correct. 

Link to comment
Share on other sites

1 hour ago, Keith_W said:

Something like a Raspberry Pi has enough CPU power to do 64k taps at 48kHz for 2 channels. I believe some people are able to do more. 

 

Shirley, Keith ... one wants to run at 96kHz, minimum?

 

So will 96kHz require 128k taps?

 

Link to comment
Share on other sites

The only advantage of running 96kHz is to reduce latency, or to run a higher tap count at the same latency. The bin size for 65536 taps at 48kHz is 0.73Hz. At 96000, double the taps maintains the same latency, but also the same bin size at 0.73Hz. Yes, 128k taps. 

Link to comment
Share on other sites

  • Recently Browsing   0 members

    • No registered users viewing this page.




×
×
  • Create New...
To Top