[Sursound] Mike Skeet 1932 - 2015

2016-01-26 Thread David Pickett
A nice appreciation of Mike Skeet by Hugh Robjohns here: http://www.ips.org.uk/articles/2016/01/20/mike-skeet-1932-2015/ David ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,

Re: [Sursound] How to derive a good "universal" HRTF data set?

2016-01-26 Thread Trond Lossius
> On 25 Jan 2016, at 01:37, Marc Lavallée wrote: > >> As anything simpler but functional might be sufficient and even >> preferable in most cases: >> >> - Does ATK define an HRTF interface which is sufficiently flexible to >> be the base for a real < standard > ? > > Not

Re: [Sursound] Never do math in public, or my take on explaining B-format to binaural

2016-01-26 Thread Dave Malham
A student, Mike (?) Evans, of colleagues of mine from the Department of Electronics at York did some work on a spherical harmonic representation of HRTF's back in the 1990's. I haven't got the paper handy but I seem to remember he ended up concluding you'd need something like 15'th order to get

Re: [Sursound] How to derive a good "universal" HRTF data set?

2016-01-26 Thread Markus Noisternig
Dear All, I would like to add a few words to the discussion on the AES69-2015 / SOFA format: AES69 standardizes the SOFA file format to exchange space-related acoustic data. The format is designed to be sufficiently flexible to include source materials from different databases and for

Re: [Sursound] How to derive a good "universal" HRTF data set?

2016-01-26 Thread Stefan Schreiber
Trond Lossius wrote: On 25 Jan 2016, at 01:37, Marc Lavallée wrote: As anything simpler but functional might be sufficient and even preferable in most cases: - Does ATK define an HRTF interface which is sufficiently flexible to be the base for a real < standard > ?

Re: [Sursound] How to derive a good "universal" HRTF data set?

2016-01-26 Thread Joseph Anderson
ally would/should Clear? My best, *Joseph Anderson* *http://www.ambisonictoolkit.net/ <http://www.ambisonictoolkit.net/>* -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/pr

[Sursound] Never do math in public, or my take on explaining B-format to binaural

2016-01-26 Thread Jörn Nettingsmeier
On 01/26/2016 06:36 PM, Stefan Schreiber wrote: 2. < 8 > impulses (for 4 virtual speakers) implies that you don't support 3D decoders (?). If not, why this? (Immersive/3D audio is on the requirement list for VR. It wouldn't make a lot of sense if all sound sources will follow your gaze -

Re: [Sursound] Never do math in public, or my take on explaining B-format to binaural

2016-01-26 Thread Joseph Anderson
, I should write a paper detailing _exactly_ what we do... ) My best, Jo *Joseph Anderson* *http://www.ambisonictoolkit.net/ <http://www.ambisonictoolkit.net/>* -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/priv

Re: [Sursound] Never do math in public, or my take on explaining B-format to binaural

2016-01-26 Thread Politis Archontis
Hi Jorn, yes that is correct. I think however that the virtual loudspeaker stage is unnecessary. It is equivalent if you expand the left and right HRTFs into spherical harmonics and multiply their coefficients (in the frequency domain) directly with the coefficients of the sound scene (which

Re: [Sursound] Never do math in public, or my take on explaining B-format to binaural

2016-01-26 Thread Fons Adriaensen
On Tue, Jan 26, 2016 at 09:52:21PM +0100, Jörn Nettingsmeier wrote: > On 01/26/2016 06:36 PM, Stefan Schreiber wrote: > > >2. < 8 > impulses (for 4 virtual speakers) implies that you don't > >support 3D decoders (?). If not, why this? (Immersive/3D audio is on the > >requirement list for VR. It

Re: [Sursound] Never do math in public, or my take on explaining B-format to binaural

2016-01-26 Thread Fons Adriaensen
On Tue, Jan 26, 2016 at 10:05:07PM +, Politis Archontis wrote: > yes that is correct. I think however that the virtual loudspeaker > stage is unnecessary. It is equivalent if you expand the left and > right HRTFs into spherical harmonics ... True, but the problem with this is that it

Re: [Sursound] Never do math in public, or my take on explaining B-format to binaural

2016-01-26 Thread Politis Archontis
Hi Fons, I think I see your point, but I still believe they are equivalent in any case? In the end by having a lower-order sound field recording (eg B-format), than the expansion order of the HRTFs at some frequency, the spatial product is going to be limited by the sound-field order. If there