Erik, 32 bit fixed point - a possibility 16.16 - where the decimal point will be is completely arbitrary. 24.8 or somewhere in between is just as easy to do. all depends on what is needed
however for mixing: add first then divide n-1 adds 1 divide divide first then add n-1 adds n divides even if divide = add for processing time 2n-1 vs n John, 100m is the limit for ethernet. I don't know of much that could use that either. (maybe a concert in a football stadium? The longest run I've seen was about 27m in a church. I was on the camcorder. I didn't know cheap mic cables could pick up AM radio ;) But I digress. Others suggested eth and I ran with it because I am familiar with it and I thought it would give a good baseline. I would of course take a better standard with a shorter range in a heartbeat. about AES50 - from aes.org CAT5 cable - cheaper than CAT6 100m max :P full duplex clock over the same cable - bonus full duplex audio - check 5Mb/s full duplex data channel - for control sideband - check point to point bus - OK fully developed audio protocol - very good google search indicates 48 channels (is that 48 each way? 48 in + 48 out = 96 - more than plenty) this would work for the internal interconnect maybe have 2 external ports on the card? (one to the patch box, one to the control box?) I think we have a winner this, of course, does not rule out optical connectors in addition as far as multiple cards, I don't see much use either, but I'm sure somebody will come up with a need, and if it doesn't really cost extra to have that, why not? live vs real-time my terminology may be off what you were describing, I would classify as 'live' - your output has to sync with the real world, not just play without skip 500ms delay playback - sorry, this was a tounge in cheek example. what I meant was, for that sort of service you can buffer the snot out of it so there is no skipping even if the host computer is very busy. for what you are talking about, I would consider 2ms delay to be excessive. Prebuffering sound effects is actually why I suggested 32MB+ ram. This would allow a large number of samples to be preloaded (MIDI or video games can use >100 if it is available) for instant playback. Repeat or overlapping playback of the same effect is a must for those services as well. 5 1 second buffers? Consider it covered :) Jack, MIL spec connectors could be doable - depends on cost/availability. If someone is willing to pay for a run with such, I'm sure OpenGraphics could arrange for whatever connectors they want :) When I say PnP, I mean anything you plug in should be immediately recognized and available, without needing any device specific drivers or special configuration beyond backplane assignment. Having serial numbers on units so preset configurations can be loaded no matter where they are connected would need to be supported as well. Since this thing is a computer in its own right, stand alone units could be done in the future. And, as Dieter said, the computer doesn't have to be in the control room, or on stage. In the same room as the amps, or next door (so those cables are SHORT) would be best. Remote GUI setup could also be arranged several different ways. Flexible is the watchword :) _______________________________________________ Join Excite! - http://www.excite.com The most personalized portal on the Web! _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
