I was trying to say something else. The head moves independently of shoulder position. Pinnae are rigidly linked to the head; the shoulders are not. That is what made me think the two should be treated separately.
umashankar Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 From: Stefan Schreiber<mailto:st...@mail.telepac.pt> Sent: Friday, February 26, 2016 8:07 AM To: Surround Sound discussion group<mailto:sursound@music.vt.edu> Subject: Re: [Sursound] OSSIC Kickstarter Campaign Begins Stefan Schreiber wrote: > Augustine Leudar wrote: > >> do you have a reference/source for that - that shoulder head reflections >> dont matter in anechoice etc etc - I would be interested to read it... >> >> > They just arrive later than direct sound. And if the HRTF length is > too short and so you don't have the sample length to capture (any) > reflections... > > Clear? Or did < I > miss something? > > St. Ok, I stand corrected: http://alumni.media.mit.edu/~kdm/hrtfdoc/section3_4.html#SECTION0004000000000000000 > In order to reduce the size of the data set without eliminating > anything of potential interest, we decided to discard the first 200 > samples of each impulse response and save the next 512 samples. Each > HRTF response is thus 512 samples long. < Most researchers will no > doubt truncate this data further. > > 44.1 kHz sampling rate As the speed of sound is about 340m/s, you will capture shoulder reflections even with just 128 samples. (If your ear-shoulder distance is about 20cm, the shoulder reflections will arrive about 40cm delayed compared to direct sound, i.e. about 1,2 ms later. 128/44.100 = 2,9 ms.) Best, Stefan _______________________________________________ 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. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20160226/b382dae4/attachment.html> _______________________________________________ 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.
