Re: [LAD] ambisonics UHJ encoder

2010/2/24 Jörn Nettingsmeier <nettings(a)folkwang-hochschule.de>de>: I'm on the Hilbert as of last night. Makes a challenging job simpler, i'd agree. > if you want to do just the latter, and you already have a b-format, it's > easier to use the vmic plugin which is part of fons' AMB plugins - it > does the same job, but is simpler to use (no jack patching). > if you have a b-format and want to produce stereo, these are the two > options you have: > 1. use UHJ to fold it down automatically (including extra surround > information that allows the consumer to blow it up to horizontal > surround again, with a few compromises). but since uhj basically moves > the rear sound stage to the front, it can sound slightly over-ambient > (not as extreme as blumlein stereo, though). > 2. use a virtual stereo mike to pick out a stereo perspective. it allows > for more control, is a lot easier to produce, and it's probably the > safer option if you want your mix to be reliable on consumer gear... 1.) I've had the ambient overdone already, so i understand what you're saying here. 2.) Virtual stereo mike? I don't understand this bit. Do we have one in Linux? Or are you referring to a process i have to build up myself? >> The intent with this is provide ambisonic positioning, and convolver >> tail, right up until downsizing to stereo as the last part of the >> signal chain. > i would definitely go that way, to be able to easily provide a b-format > output. Sounds like a plan. > since you are dealing with artificial sources anyways, why stick to > first order? do your panning in higher order instead. the use of > resources is minimal (although it will create an insane amount of jack > ports, so use -P2048). it won't make any difference to your UHJ, since > it only ever sees WXY, but it would enable you to produce really crisp > n.1 or HOA decodes without any extra work. I don't know enough about higher order yet, but i am proficient in handling insane amounts of of ports, so that bit isn't overwhelming. :) > just one, totally unrelated, but smart(-ass) nonetheless: could you > please edit your replies to quote only the part you are directly > referring to? i'm usually very curious about things you have to say on > the list, but my mouse wheel finger is getting RSI... > best, > jörn Good point, and i'll endeavour to do this in future. My thanks to you and Fons for the info, and your continued generosity in sharing. Alex. -- www.openoctave.org midi-subscribe(a)openoctave.org development-subscribe(a)openoctave.org