2011/5/1 Richard Dobson <richarddob...@blueyonder.co.uk> > On 01/05/2011 12:50, Svein Berge wrote: > .. > > >>> Another anecdotal answer, which doesn't even quite address the question: >> The >> difference between 1st order horizontal and 3rd order horizontal is easy >> to >> hear for the common man. >> > > Using 5.1, or some other arrangement? >
Bertet et al used 12 speakers on a circle, and also studied the effect of reducing the speaker count to 8 for the 3rd order material and 4 for the 1st order material. We used 8 speakers on a circle. > > The colloquial assumption or implication behind the use of the word > "difference" is that one presentation was better than another, but strictly > speaking all it says is that people noticed some difference. Adding reverb > makes a difference (some folk claim that directional cable makes a > difference), but more is not necessarily better. So it would be good to have > some elaboration of what form the listening tests took, and what > "difference" really means here. These tests followed a roughly the MUSHRA protocol for blind testing, and "difference" means that the systems were statistically distinguishable, looking only at people's scores, at the 95% confidence level, using common hypothesis testing techniques. All systems were compared to a reference system and what people were evaulating was the amount of degradation from the reference. More details about the tests are available in the papers for those with a high patience * curiosity product: http://ambisonics-symposium.org/symposium2009/proceedings/ambisym09-bertetdanielparizetwarusfel-listeningev.pdf/at_download/file http://harpex.net/harpex.pdf Svein Berge -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20110501/8a3f3a64/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
