On 6 Dec 2015, at 11:46, Jörn Nettingsmeier wrote: > > btw, since you're quoting this very interesting article, it has been partly > superseded by recent research of lee at al. at huddersfield (see latest > JAES), who found that there is _no_ vertical precendence effect and that > interchannel time differences in vertically spaced loudspeakers do not > contribute to localisation in any way. helmut is aware of this and has > presented a much more compact 8-channel mic array at ICSA 2015 in graz, where > the top and bottom mics are practically coincident.
Perhaps I've missed it but no-one seems to have mentioned head movements. I've noticed that I'm constantly moving my head while recording, mixing, performing or just enjoying nature. IME head movements will introduce ITD's and allow more precise localization of sounds. This recent study that seems to confirm that: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4130110/ "Previous studies have shown that the accuracy of sound localization is improved if listeners are allowed to move their heads during signal presentation. This study describes the function relating localization accuracy to the extent of head movement in azimuth. Sounds that are difficult to localize were presented in the free field from sources at a wide range of azimuths and elevations. Sounds remained active until the participants’ heads had rotated through windows ranging in width of 2, 4, 8, 16, 32, or 64◦ of azimuth. Error in determining sound-source elevation and the rate of front/back confusion were found to decrease with increases in azimuth window width. Error in determining sound-source lateral angle was not found to vary with azimuth window width. Implications for 3-d audio displays: the utility of a 3-d audio display for imparting spatial information is likely to be improved if operators are able to move their heads during signal presentation. Head movement may compensate in part for a paucity of spectral cues to sound-source location resulting from limitations in either the audio signals presented or the directional filters (i.e., head-related transfer functions) used to generate a display. However, head movements of a moderate size (i.e., through around 32◦ of azimuth) may be required to ensure that spatial information is conveyed with high accuracy." Kees de Visser _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
