On May 12, 2013, at 6:00 PM, sursound-requ...@music.vt.edu wrote: > From: revery <rev...@aircarving.com.au> > Subject: Re: [Sursound] Naive question on MS and Ambisonics > To: sursound@music.vt.edu > Message-ID: <f979611e-d16b-45a4-8411-a185b312e...@aircarving.com.au> > Content-Type: text/plain; charset="us-ascii" > > Thank you all for your replies. I can see now that my questions was not > expressed at all well and somewhat sparsely, so thanks for the efforts made > to respond, they have been very helpful.
> Another aspect was the use of B-format based tools to create virtual mics > from Mid-Side based recording, even in the one-dimensional case, but > particularly for horizontal surround. I think there is some utility in this > angle. > Justin you mention the ease of creating 5.1 from mid-side - can you point at > tools and resources for this please? I would be most interested (I've looked > for this kind of tool but without much success). I made my own spatialisation tools for MS (or any other co-incident stereo) using Max. I was using simple matrixing for generating speaker feeds. M+S = L and M-S = R and M = Centre obviously, but if you use a "direction mixer" such as included in "Logic" which does M/S rotation, and then extract the M channel, you can get a speaker feed for any angle. Not terribly directional, but in large spaces I used up to 6 channels effectively. Opposite speakers carry the same signal but out of phase, but if you use a non-symmetrical rig (like 5.1) then there are no speakers oppositie each other and it seems to work better. I seem to remember that Waves had plug ins to do this kind of thing too, including shuffling (?) Could introducing time delays with shuffling increase the sweet spot ? best, Justin _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
