Hi Richard To start with, and to do some tests, I will be using what is freely available, but fully intend to migrate to a suite of encoders and decoders not unlike your own. It really depends on how it all sounds and functions. I may even consider doing some coding myself...Do you do deals on the complete works, encoders, decoders and upscalers (including harpex)? One of my main concerns in this area is one of control. As yet I haven't found a satisfactory way of using a controller to continuously rotate on any or all planes . A xyz trackball would be ideal but they are expensive and cumbersome, as they are geared towards graphics manipulation. I think I may take two normal kensington type trackballs apart and make one with the extra axis stuck on! (they only operate in two planes).
Reflections and echos won't be a problem, this I know for sure, as I have built many great sounding stereo studios. The walls will be open and hessian covered, allowing absorption into very thick high density resin rock wool. Which will mean low RT60. Bass will be controlled by traps, room eq and the fact that the room is contained with in a room, within my larger space. The brick walls will be quite some distance from the subs and hopefully energy will of dissipated enough before return! Speaker placement shouldn't be a problem either, as this will have priority over windows and screens (or screen will open acoustically), apart from the door that is. Left and right symmetry is though, and I think this is quite critical. Pretty much all noisy machinery will also be in a separate room, or i'll just turn up the volume to compensate :) Thanks Steve > Message: 1 > Date: Tue, 11 Mar 2014 16:13:18 -0000 > From: "Richard Furse" <rich...@muse440.com> > To: "'Surround Sound discussion group'" <sursound@music.vt.edu> > Subject: Re: [Sursound] Construction of purpose built ambisonic > studio. > Message-ID: <008001cf3d44$d18182f0$748488d0$@muse440.com> > Content-Type: text/plain; charset="us-ascii" > > Hi there - sounds like a good venture! > > Whether or not you need a regular speaker layout rather depends on how > you're decoding. We built an ambisonic sound lab last year - there's a > slightly blurry but current photo at > http://www.blueripplesound.com/downloads/SoundLab20140311.jpg, and the > speaker layout is actually the GUI example at > http://www.blueripplesound.com/products/rapture-3d-advanced. This is > definitely *not* regular, but sounds great IMO. > > The space was about 6m x 7m x 2.5m before the sound proofing / treatment > went in (RT60 ~= 1/6s). The height was okay, but not brilliant, so we > treated the ceiling and walls but not the floor, and went for a low seat to > keep what space we could above. IIRC we lost 18cm on each surface. The > speaker distances range from 1.5m to 3.4m from the centre and their > locations have no particular plan beyond aiming to get reasonable coverage > (i.e. no large directional gaps) except beneath the listener, and to not get > in the way of the screen, windows or door. All speakers can be moved except > the ceiling ones, although we've not done this yet. The speakers in the room > are currently set out roughly left/right symmetric, but this isn't > necessary. We often use more irregular subsets of the 22 speakers when > testing, but for general use it seems a shame not to turn them all on! (With > Rapture3D, this is fine even for first order.) There are no centre speakers > in the ceiling simply because of a metal beam there. The current weakest > points are probably the fans in the projector and PC (there's no separate > control room), but hopefully we'll upgrade those to silent ones soon(ish). > When working with the projector on, the final essential components are a > wireless keyboard and mouse - and sometimes a PC X-Box controller ;-) > > Best wishes, > > --Richard -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20140319/82a27242/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
