HI, yes there are multiple works from many reearchers on spherical harmonic expansion of HRTFs (Evans, Duraiswami, Dylan Menzies and others), Rozenn Nicol’s is a very thorough one, and the last (probably) on the list are two nice papers from Romigh and Brungart in IEEE’s Journal of Selected Topics on Signal Processing: Spatial Audio issue (JSTSP, 9(5), August 2015).
I think the important facts are that in this way you get a nice continuous representation of HRTFs, which you can interpolate anywhere smoothly and with an interpolation that uses all your data points (measurements). You also get a natural ambisonic binauralization operation, the binaural signal is simply the product-and-sum of the HRTF coefficients with the HOA signals (in the frequency domain, or convolutions equivalently in the time domain). You need a lot of coefficients at high orders (~15) to capture all the spatial variation of the HRTFs, but that is frequency dependent, at low frequencies the few first orders are enough to capture the shape. Regards, Archontis > On 27 Jan 2016, at 11:02, florian.came...@orf.at wrote: > > Hello, > > may I point you to the AES Monograph on Binaural Technology by Rozenn Nicol, > published on 2010. Rozenn has nicely summarised most of the issues which have > been discussed > here lately, and she provides an extensive list of references (more than > 200!). Well worth reading > (35$ for AES members). > > Best wishes, Florian > _______________________________________________ > 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. _______________________________________________ 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.
