[Sursound] Simulation of personalized HRTFs

[Antti Vanne]

Hi everyone,

earlier this year there was discussion on this list about deriving
generalized HRTFs and a reference to our earlier work  "Rapid Generation of
Personalized HRTFs" http://www.aes.org/e-lib/browse.cfm?elib=17365 .

Now it is possible to get your own HRTF simulated
http://www.slideshare.net/TomiHuttunen1/ownsurround-hrtf-service-for-professionals

Nowadays there are scanning service providers in most cities. If you can't
find one but happen to have access to a structured light scanner, there's a
tutorial video on YouTube on the scanning process
https://www.youtube.com/watch?v=Jo8Pq7t2V5Y


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Re: [Sursound] Decent Binaural softwar eor VST ?

[Antti Vanne]

Are you looking for a binaural panner for mono sources or for ambisonic
content? Noisemakers' Ambi head allows loading a custom HRTF and for mono
sources there's  https://github.com/tmwoz/binaural-vst



On Mon, Nov 21, 2016 at 4:46 PM, Augustine Leudar  wrote:

> Can anyone recommend a decent Binaural VST plugin or software ? The vst
> plugins I have used barely do more than a normal panner. I am aware of the
> issues surrounding individualised HRTFs but was wondering if anyone could
> recommend some software anyway,
> cheers,
> Gus
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Re: [Sursound] How to find best fit of SOFA files from CIPRIC?

[Antti Vanne]

Would you be interested trying out our mobile phone scanning, see e.g.
https://medium.com/@nahkiz/the-holy-grail-in-audio-and-how-we-found-it-c3e55ccdf37a

On Oct 6, 2017 16:26, "Bo-Erik Sandholm"  wrote:

> I am looking for information on how to find the best fit from public/Free
> SOFA databases.
>
> I think one criteria could be the inter ear distance?
> How would I for example find the best fit in the CIPRIC SOFA database for
> my headwith.
>
> I do not really want to test all available SOFA files by listening with
> them.
>
> And for me the process of getting a personal SOFA seems still to be too
> expensive or at least hard to do.
>
> Bo-Erik
> Stockholm Sweden
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Re: [Sursound] How to find best fit of SOFA files from CIPRIC?

[Antti Vanne]

Hi,

we use three videos for the reconstruction. One where you go around the
scanned person so that his/her head and shoulders are visible. The other
two are closeup's of the ears, where you move the phone so that all parts
of the pinnae are illuminated and recorded. In the video embedded in the
blog post the ear closeups are actually the ones used for the
reconstruction.

This way we get good resolution where we need it and it only takes about a
minute for the whole scan.

I'll be in touch next week with everyone interested.

BR
Antti





On Fri, Oct 6, 2017 at 9:35 PM,  wrote:

> Hi Antti...
>
> Could you be a bit more explicit on how the photo scan is actually done?
>
> Is not explained in the link(s) - and should not be a classified secret
> either I guess..
>
> Thanks!
>
> Stefan
>
> Citando Antti Vanne :
>
> Would you be interested trying out our mobile phone scanning, see e.g.
>>
>>  https://medium.com/@nahkiz/the-holy-grail-in-audio-and-how-
>> we-found-it-c3e55ccdf37a
>>
>>
>>
>>  On Oct 6, 2017 16:26, "Bo-Erik Sandholm"  wrote:
>>
>> I am looking for information on how to find the best fit from public/Free
>>>
>>>  SOFA databases.
>>>
>>>
>>>
>>>  I think one criteria could be the inter ear distance?
>>>
>>>  How would I for example find the best fit in the CIPRIC SOFA database
>>> for
>>>
>>>  my headwith.
>>>
>>>
>>>
>>>  I do not really want to test all available SOFA files by listening with
>>>
>>>  them.
>>>
>>>
>>>
>>>  And for me the process of getting a personal SOFA seems still to be too
>>>
>>>  expensive or at least hard to do.
>>>
>>>
>>>
>>>  Bo-Erik
>>>
>>>  Stockholm Sweden
>>>
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-- 
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OwnSurround
Tel. +358 50 3566744
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Re: [Sursound] How to find best fit of SOFA files from CIPRIC?

[Antti Vanne]

You can find some recent papers and a high resolution near field HRTF set
from http://idaaudio.com/downloads/

Also, our CTO published in 2007 first paper to demonstrate simulation of
complete audible range HRTF using parallel computing: http://www.
worldscientific.com/doi/abs/10.1142/S0218396X07003469

Others that might be interesting:
Rapid generation of personalized HRTFs http://www.aes.org/e-lib/
browse.cfm?elib=17365
Simulation of head related transfer functions using cloud computing
http://asa.scitation.org/doi/abs/10.1121/1.4800138

Our early simulation data was used in perceptual tests, but this doesn't
include personalised HRTFs but simulation of HATS dummy
http://www.aes.org/e-lib/browse.cfm?elib=14619

BR
Antti



On Sat, Oct 7, 2017 at 3:55 AM, Marc Lavallée  wrote:

>
> I'd be very interested to try.
> Some references (and even source code) would also be much appreciated.
>
> --
> Marc
>
> Le Fri, 6 Oct 2017 22:26:48 +0300
> Antti Vanne  a écrit:
>
> > Hi,
> >
> > we use three videos for the reconstruction. One where you go around
> > the scanned person so that his/her head and shoulders are visible.
> > The other two are closeup's of the ears, where you move the phone so
> > that all parts of the pinnae are illuminated and recorded. In the
> > video embedded in the blog post the ear closeups are actually the
> > ones used for the reconstruction.
> >
> > This way we get good resolution where we need it and it only takes
> > about a minute for the whole scan.
> >
> > I'll be in touch next week with everyone interested.
> >
> > BR
> > Antti
> >
> >
> >
> >
> >
> > On Fri, Oct 6, 2017 at 9:35 PM,  wrote:
> >
> > > Hi Antti...
> > >
> > > Could you be a bit more explicit on how the photo scan is actually
> > > done?
> > >
> > > Is not explained in the link(s) - and should not be a classified
> > > secret either I guess..
> > >
> > > Thanks!
> > >
> > > Stefan
> > >
> > > Citando Antti Vanne :
> > >
> > > Would you be interested trying out our mobile phone scanning, see
> > > e.g.
> > >>
> > >>  https://medium.com/@nahkiz/the-holy-grail-in-audio-and-how-
> > >> we-found-it-c3e55ccdf37a
> > >>
> > >>
> > >>
> > >>  On Oct 6, 2017 16:26, "Bo-Erik Sandholm" 
> > >> wrote:
> > >>
> > >> I am looking for information on how to find the best fit from
> > >> public/Free
> > >>>
> > >>>  SOFA databases.
> > >>>
> > >>>
> > >>>
> > >>>  I think one criteria could be the inter ear distance?
> > >>>
> > >>>  How would I for example find the best fit in the CIPRIC SOFA
> > >>> database for
> > >>>
> > >>>  my headwith.
> > >>>
> > >>>
> > >>>
> > >>>  I do not really want to test all available SOFA files by
> > >>> listening with
> > >>>
> > >>>  them.
> > >>>
> > >>>
> > >>>
> > >>>  And for me the process of getting a personal SOFA seems still to
> > >>> be too
> > >>>
> > >>>  expensive or at least hard to do.
> > >>>
> > >>>
> > >>>
> > >>>  Bo-Erik
> > >>>
> > >>>  Stockholm Sweden
> > >>>
> > >> -- next part --
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> > >
> > > ___
> > > 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.
> > >
> >
> >
> >
>
>


-- 
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Re: [Sursound] Individualized HRTFs (Augustine Leudar)

[Antti Vanne]

music.vt.edu>  >> Sursound@music.vt.edu>
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> >> https://mail.music.vt.edu/mailman/listinfo/sursound>
> >>
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> >
> >
> >
> > --
> > Dr. Augustine Leudar
> > Artistic Director Magik Door LTD
> > Company Number : NI635217
> > Registered 63 Ballycoan rd,
> > Belfast BT88LL
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-- 
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OwnSurround Ltd / IDA Audio
CEO

Haapaniemenkatu 40
<https://maps.google.com/?q=Haapaniemenkatu+40&entry=gmail&source=g> E 1
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Re: [Sursound] A submittal for a patent on Ambisonics?

[Antti Vanne]

If someone is interested digging deeper into near field HRTFs, there's one
high resolution HRTF available at http://idaaudio.com/downloads/

Sofa format allows storing impulse responses at multiple distances and Spat
Revolution should be able to use that for rendering point sources.

On Tue, Jan 23, 2018 at 3:54 PM, Jack Reynolds 
wrote:

> I’m sure that the pinna must have an affect at close range.
> I’m really looking forward to multiple distance HRTFs become a reality, as
> this is one of the limitations currently.
> Similarly, mulitiple A to B microphone filters, measured at different
> distances would be nice!
>
> Sent from my iPhone
>
> > On 23 Jan 2018, at 12:16, Augustine Leudar 
> wrote:
> >
> > Hi Jack,
> > Aside from ILDs, ITDs, I also wondered if the pinna was able to
> distinguish
> > very close sound sources due to the fact the wavefront would be much more
> > curved almost spherical to the degree that it would be different pressure
> > present at different folds of the pinna (ie  very close up  sound slike a
> > mosquito) . I dont think theres been much done on that...
> >
> > On 23 January 2018 at 11:58, jack reynolds 
> > wrote:
> >
> >> It looks like a method for binaural rendering with multiple distance
> HRTFs.
> >>
> >> Ambisonics could be one of the inputs, but it seems to be aimed more at
> >> object based virtual reality, where the listener is more likely to come
> >> very close to an audio source.
> >>
> >> Most HRTFs are currently measured at 1m distance, so any objects closer
> >> than 1m are not currently rendered correctly.
> >>
> >> Far field HRTFs are closer to plane waves, whereas close up audio
> objects
> >> emit more spherical waves, creating greater differences in interaural
> time
> >> difference (ITD).
> >>
> >> Jack
> >>
> >> On 23 January 2018 at 11:18, Bearcat Şándor 
> >> wrote:
> >>
> >>> I don't know a lot about patent law, but is this an attempt to tie up
> our
> >>> beloved Ambisonics?
> >>>
> >>> http://www.freepatentsonline.com/y2017/0366912.html
> >>>
> >>> If so, can we do anything about it?
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> >>>
> >>
> >>
> >>
> >> --
> >>
> >> 07889727365
> >>
> >> 02036861372
> >>
> >> 3 Swimmers Lane
> >> Haggerston
> >> London
> >> E2 8FR
> >>
> >>
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> >
> >
> >
> > --
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> > Artistic Director Magik Door LTD
> > Company Number : NI635217
> > Registered 63 Ballycoan rd,
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-- 
Antti Vanne
OwnSurround Ltd / IDA Audio
CEO

Haapaniemenkatu 40
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