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Behringer UMC1820 as I/O for PC based DSP?

977 Views 2 Replies 2 Participants Last post by  Bharath0224
I am making a some JBL 4722 clones and wanted to make them active since a lot of others had great success with them. After coming across discussions of FIR filters, I knew I had to try it out. Even though some miniDSP products support FIR filters, I want get the most out of my speakers and decided to go with a PC setup. I had looked into RME soundcard + ADAT AD / DA interfaces but that gets more complicated with trying to get older hardware to run in newer computers. USB interfaces would simplify things and also let me just use a laptop rather than a desktop. However, the MOTU interfaces that a lot of others use are quite expensive. Could I do the accomplish the same task with the UMC1820? I'm hoping to use the preouts from my receiver to go into the UMC1820, connect the interface to my pc via USB, process the signals using some software, send the signal back to the interface, then to my amp and finally to the speakers.

I'm very new to DSP so I don't know if I am completely misunderstanding something and am lost, or if I'm heading in the right direction. I use Equalizer APO for my headphones and even tried it out for my home theater before, but I'm not sure if that supports audio interfaces with many channels. If I need to use some other software to get this setup working I certainly am willing to switch to it. I'm also open to suggestions for other hardware options that allows me to run my speakers actively, as there are likely many other options that I haven't even come across yet.
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There's nothing special, really. The USB audio interfaces are just sound cards to the operating system and treated as such. There are special options that can apply to all sound cards like dedicated modes, and many devices have special low latency modes that drop the audio latency from tens to hundreds of milliseconds to under 10 milliseconds.

The question before doing all this is the software. Are you writing it yourself or are you relying on prepackaged software? Because of it's prepackaged you need to know if it's tied to that specific hardware or can work in general, or if there are special requirements. There's way too much out there and knowing what you can use or what kind of system is required is impossible. Some may require really high end systems, others are buggy, etc.

The real thing is have you tried any of it or is this brand new to you? Because a lot of it is way more advanced and more obscure or may need a lot of pieces to get set up to just commit without actually having tried it.
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Brutefir seems to be the best software for this. It was made 2 decades ago so should be easy to run, but the problem as you mentioned is compatibility. The UMC1820 supposedly works out of the box on Linux so one would think that brutefir will work with it, but can't know for sure until someone has tried it.

It's a steep learning curve for sure, but I have read some very useful posts to get it setup. I haven't used brutefir before but I have some experience with room eq. I used REW to create filters and ran them on my PC using Equalizer APO. Creating filters for brutefir seems to be similar but adds rephase to create FIR filters (and it's a different os). The lack of a gui on brutefir will take some time to get used to but I'd like to think I can figure it out.

But as I'm new to this stuff, I could be very wrong. There could be something I don't know yet that makes this a fruitless endeavor.
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