I was only thinking of the headphones as an 8 transducer array. Maybe producing an ambisonic (or other) sound field, that could have tinting applied to it. Rather than a straight conversion to binaural, (why have 8 transducers otherwise ?). This could allow ones own pinna to function to some degree, without the need for measurement. All only conjecture of course, as I am not aware of any research that applies ambisonic (or other) arrays within headphones.
Steve. On 24 Feb 2016 8:06 pm, "Politis Archontis" <archontis.poli...@aalto.fi> wrote: > Thanx Marc for the pointer. > > Having a quick look, it seems that tinting is what I call sound-feld > shaping, and also what Kronlachner has included in his ambisonic plugins as > “directional loudness”. > Essentially it describes the application of an arbitrary directional > weighting to the sound-field before decoding, so that for example certain > angular regions can be attenuated or modified compared to others. I have > also used it for acoustic analysis purposes, to analyze what’s happening > (sources/reflections) only on a certain angular region. The operations to > do that arise naturally in the SH theory. > > Richard in his patent seems to be applying the HRTFs as spatial weighting > to the sound-field, in order to enhance various cues including elevation, a > smart idea! Note that this is different from a direct ambisonic to binaural > conversion, in which you take the HOA signals and you end up with two > binaural signals, here you take the HOA signals, you weight the sound-field > with the HRTFs, and you end up with 2 times the HOA signals, HRTF-weighted, > one set for each ear. These can then be used for an enhanced ambisonic to > binaural conversion. > > I too fail to see though what this has to do with the OP headphones with > the 4 drivers inside… > > Regards, > Archontis > > > On 24 Feb 2016, at 19:58, Marc Lavallee <m...@hacklava.net> wrote: > > > > On Wed, 24 Feb 2016 14:27:36 +0000 > > Politis Archontis <archontis.poli...@aalto.fi> wrote: > > > >>> On 24 Feb 2016, at 16:04, Steven Boardman > >>> <boardroomout...@gmail.com> wrote: > >>> > >>> Yes. > >>> > >>> Richard Furse’s Blue Ripple Sound uses HRTF tinting in their > >>> decoder, it works very well. Although I think he may have a patent > >>> on it…:) > >>> > >>> Steve > >>> > >> > >> Hi Steve, > >> > >> what is HRTF tinting? I haven’t heard the name before.. > >> > >> Archontis > > > > There's a description in the text of the patent: > > http://www.freepatentsonline.com/y2015/0262586.html > > http://www.freepatentsonline.com/20150262586.pdf > > > > How multiple drivers can use HRTF tinting is unclear. > > (but as most patents, they are difficult to understand). > > -- > > Marc > > > > _______________________________________________ > 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/20160224/16795156/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.
