> What makes you think that ORTF captures > 'a small 8th of a sphere' ??
I don’t.. Maybe I wasn’t clear. What I meant was replacing each ORTF capsule (or M/S pair) with an ambisonic mic, and decoding for the direction it should point. All spaced array setups can use ambisonic mics, as they can output all the polar patterns required. My point was; the polar patterns would be more accurate (for a calibrated mic) and hence the spatial accuracy better. So yes exactly that. Thanks for making it clearer :) Steve > > Sorry, this doesn't make any sense... A decoder doesn't give 'spherical > coordinates', it outputs signals. What makes you think that ORTF captures > 'a small 8th of a sphere' ?? > > Each Ambisonic mic, by suitable combination of its capsule signals [1], > can provide the same signals as any number of conventional capsules > (omni, cardioid, fig-of-eight,...) placed at the same point in space > and in any direction. > > So you can always replace every group of (nearly) coincident conventional > capsules (e.g. an M/S pair) by an Ambisonic one and get exactly the same > signals. > > If you use a higher order AMB mic (e.g. an OctoMic) you can even get > polar patterns for which no conventional capsule equivalent exists, and > which certainly provide an advantage for surround. > > That's all there is to it. > > > [1] This involves some filtering as well as just summing/subtracting > signals, and for good reults it requires calibration of the AMB mic's > capsules. If you experimented with Ambisonics in the way you pointed > out, it's no surprise you got bad results. > > As I've stated a number of times before, there is *a lot* of completely > bogus information on Ambisonics technology floating around. Some of this > stuff is at the same level of intellectual integrity as e.g. flat-earth > theories. Most of it is just the results of failing to understand basic > things, or of simplifying things to the point that whatever remains is > 'not even wrong'. Combine that with some people having their own agenda. > > Ciao, > > -- > FA > > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit > account or options, view archives and so on. _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
