On 2014-04-06, Augustine Leudar wrote:
Can you do this with any 7.1 usb card ? Wich did you use ?
Well now you opened a can of worms even on my behalf. What really is the minimal, asymptotic per-channel cost of well-synchronized multichannel audio D/A? Let's say, presuming you can only draw whatever power you can from an USB3 port, or a PoE enabled Gigabit Ethernet one? Then presupposing at least CD level 98dB (linear unfiltered SPL) S/N for any outbound signal is required? How many outbound analog, balanced connections could you honestly claim to be able to do, at the standard levels? And once you got that, what's the cost-against-number-of-chn curve? What's the curve against diminishing voltage, assuming as little output current as you can achieve over our outputs in average? How would you achieve the optimum scaling using extant mass-produced, mutually syncronizable to sampling-time-accurate D/A-chips at your disposal? Which were the chips precisely which you would utilize? Are they really the cheapest out there even taking into account the external components they require in order to function properly, and how/why do they scale out/in-parallel?
Seriously, guys, this is like the Grail of low cost ambisonic on the hardware side. Right now we can do first order at four hifi outputs, but quite likely we can't even do eight for second order. Simply forget about third or fourth order using any current standard interconnect, either because you can't get the data across, or because nobody likes an extraneous transformer for something like this.
So if we do it as compatibly and harmlessly and most efficiently as we can, all round, where're connector count, power and datarate curves per dollar, here?
-- Sampo Syreeni, aka decoy - [email protected], http://decoy.iki.fi/front +358-40-3255353, 025E D175 ABE5 027C 9494 EEB0 E090 8BA9 0509 85C2 _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound
