Hi Aaron Thanks for your response.
What I meant by 'angle errors', was that if the speakers are placed in a different part of the room that was structurally different, the sound waves would not be the same as the any of the others (due to reflection/absorbs-ion phase errors altering frequency/transient response). This can be improved through dsp, but it is never as good as getting it right at source. Maybe 'angle errors' was not the correct term. Stanford's CCRMA room does look (and undoubtably sound) good, but the space below is maybe a bit over board for what I want to achieve, in the space I have. The actual area of the build space is probably around 180 square foot within a bigger space of 700 square foot on two floors. It does have high ceiling though, with an apex over 4 metres (6.8 metres from ground floor to apex). This does dictate to a certain extent the shape of the room, as the room will be built on a mezzanine above the ground floor. This means the 'front' already slopes down to1.80 metres, rising to the back 4.5 vertical wall (that meets the apex). A box could still be constructed though, ignoring the slopes, but as I mentioned earlier this would actually be beneficial in front dominant mixing. I will probably go for a raised listening position to achieve more down positions, although to get a fully central head position standing may be required. I will be very interested in your forth coming paper on partial coverage speaker arrays, as to date I have only used the platonic solids, or only horizontal decodes. Cheers Steve > Message: 10 > Date: Sat, 8 Mar 2014 20:26:17 -0800 > From: Aaron Heller <hel...@ai.sri.com> > To: Surround Sound discussion group <sursound@music.vt.edu> > Subject: Re: [Sursound] Construction of purpose built ambisonic > studio. > Message-ID: > <CA+MMR5BuP=iCrgw+YOKhoKkSk=y3rspyu0fjsaj+ezk9+ww...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Steve, > > I'm not sure I follow everything you're saying about angle errors, but > there are a few installations that work well here in the SF Bay area that I > have personal experience with. The Listening Room at Stanford's CCRMA > is a 3rd-order periphonic facility, described here > > https://ccrma.stanford.edu/room-guides/listening-room/ > > The others are in private homes, so I'll let the owners to chime in if they > please. They're good sounding rooms, but without special acoustic > treatment. (unlike my living room, which is glass on three sides). There > are several accounts of Ambisonic reproduction not working well in very > dead rooms, such as an anechoic chamber. > > Also, for 3rd order periphonic you need to place a number of speakers below > the listener, which can be a challenge. The acoustically transparent floor > in CCRMA's Listening Room is one solution. Eric Benjamin and I have a > paper in the upcoming Linux Audio Conference on designing HOA decoders for > partial coverage speaker arrays, such as domes and rings. > > Aaron (hel...@ai.sri.com) > Menlo Park, CA US > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <https://mail.music.vt.edu/mailman/private/sursound/attachments/20140308/a123ed5c/attachment.html> -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20140310/d8afee27/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
