I know there is I2S input/output on the board. But, my knowledge is zero to these kinds of digital connections.

Maybe I2S is all we need? But I also know you are working on a spdif option. What about USB together with, or instead of spdif? As I see it, spdif is a digital standard that have had it's time.

Regarding I2S, it would be nice if you could write (or a forum reader morer skilled than I) an article on how to use I2S from a PC soundcard. I recon that many users of a DSP based x-over uses a PC of some sort to play theire music.

Would this work as I2S input?

diyparadise.com/web/index.php?option=com...;id=75&Itemid=26

I2S stands for Inter IC sound and is a way to send digital audio between IC's. While it's not very complex to understand, it's there for those of you who know how it works and give DIYers the opportunity to interface with their existing DIY stuff (e.g. a good preamp) You may want to have a look at our I2S technical note on the download section of our site for some details.

Now, I2S is not intended for long distances (i.e. over a cable from a PC sound card). You could if you know a bit of electronic maybe tweak your PC to grab the I2S from a motherboard, but it means too much work/knowledge involved and would not recommend it if you don't know what you are doing. USB audio is indeed the way to go when you have a digital audio PC source. There are however some issues with getting a format that the DSP can work with (sample rate converter needed).

Getting a nice 24bit USB audio solution for multi-channel is a design we already made as a quick sketch (no proto/no full engineering). If we do it, we'll do it right so it won't be an overnight 16bit DAC solution as it's readily available. There are also a couple of other cards that may go before this one (e.g. high fidelity audio) though, and we'll have to first establish which one are worth doing it.

Hope this answers your questions and keep posting ideas like this so that we can hear feedback from our community.

No, this USB to SPDIF board will unfortunately not work since it's 16bit and doesn't have a Sample Rate Converter. Our interface is 24bit/48kHz so not the same format for the I2S stream.

Stay tuned for our SPDIF/Optical I/O card release in the next few weeks.

Does someone have link to device which can be connected to miniDSP boards and get sound from USB?
Im looking for that device which have option to connect 2 miniDSP boards(4-way stereo)...

I think that we have just what you're looking for.

Check out our newly released product: miniSTREAMER. A USB to SPDIF/I2S interface providing native support for up to 24/96kHz.

Check it out here for more info.

DevTeam