A few years ago some colleagues and I created a SOFA format for headphone
transfer functions and put several different databases together so you can
compare the effect of inter-subject and intra-subject variation in
frequency responses for different sets of headphones. We had relatively
good results applying a regularized equalization to HD650s, but there is a
lot of variation between subjects and even for different seatings of the
same headphones on the same subject above 4 kHz. When you equalize the
headphones without regularization, these high-frequency notches often move
slightly and the peak introduced by the EQ ends up sounding like a
distortion effect. This can certainly harm good localization, but is also
just really distracting in general and reduces the quality of the audio
greatly.

https://www.princeton.edu/3D3A/Phona.html
<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.princeton.edu_3D3A_Phona.html&d=DwMFaQ&c=U0G0XJAMhEk_X0GAGzCL7Q&r=wd683ch824nUtJ9E4htox8YpRcQPHfAnY5ktFkNI0XQ&m=FDRsUAhvUuIWx5puNUIuTFiLpucBNJGiaQn8OiFEBD4&s=T4VNcNvpfwXIcprS3Eg4p4hDOhCvjDWBniZ0K76kKIU&e=>


-- 
Braxton Boren
Assistant Professor, Audio Technology
American University



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On Wed, Jun 24, 2020 at 12:00 PM <sursound-requ...@music.vt.edu> wrote:
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> Today's Topics:
>
>    1. Re: Suitable headphones for monitoring binaural compositions
>       (Brian KATZ)
>    2. Re: Suitable headphones for monitoring binaural (Justin Bennett)
>    3. Re: Suitable headphones for monitoring binaural (Augustine Leudar)
>    4. Re: Suitable headphones for monitoring binaural compositions
>       (Augustine Leudar)
>    5. Re: Rode NT SF1 (Jack Reynolds)
>    6. Re: Rode NT SF1 (Ross Adams)
>    7. Re: Suitable headphones for monitoring binaural compositions
>       (Augustine Leudar)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 24 Jun 2020 11:48:53 +0200 (CEST)
> From: Brian KATZ <brian.k...@sorbonne-universite.fr>
> To: sursound@music.vt.edu
> Subject: Re: [Sursound] Suitable headphones for monitoring binaural
>         compositions
> Message-ID:
>         <
> 969745703.37859639.1592992133215.javamail.zim...@sorbonne-universite.fr>
>
> Content-Type: text/plain; charset=utf-8
>
>         "it would interesting to see if there are any papers/listening
> tests which have
> tested lovcalisation with HRTFs and different types of headphones - are
> there any ?"
>
> Here is at lest 1 study that I am familiar with:
>
> D. Sch?nstein, L. Ferr?, and B. Katz, ?Comparison of headphones and
> equalization for virtual auditory source localization,? in Acoustics?08. 9e
> Congres Fran?ais d?Acoustique of the SFA. Paru dans : JASA, Vol 123, n?5,
> (Paris), pp. 1?5, 2008, (
> http://webistem.com/acoustics2008/acoustics2008/cd1/data/articles/001080.pdf
> ).
>
> --
> Brian FG Katz, Research Director, CNRS
> Groupe Lutheries - Acoustique ? Musique
> Sorbonne Universit?, CNRS, UMR 7190, Institut Jean Le Rond ?'Alembert
> http://www.dalembert.upmc.fr/home/katz
>
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 24 Jun 2020 11:49:52 +0200
> From: Justin Bennett <j...@bmbcon.demon.nl>
> To: sursound list <sursound@music.vt.edu>
> Subject: Re: [Sursound] Suitable headphones for monitoring binaural
> Message-ID: <3dc245c6-a822-42f0-9467-941ba597f...@bmbcon.demon.nl>
> Content-Type: text/plain;       charset=utf-8
>
> Hi Augustine,
>
> I have good experience with various Sennheiser cheap open-back headphones
> for binuaral
> presentation - we use them a lot for audio-walks with many binaural
> effects. However each
> model has a particular frequency response which I almost always correct
> for in my mix.
>
> But for mixing and mastering usually use Beyer Dynamic DT-250?s. These are
> a closed type
> and also not super- hi-fi but for me they represent the kind of NS-10
> experience you?re talking about. Also they are incredibly comfortable and
> handy for field recording, which is what I use them for mostly. Although
> these days they?re used more for online conference calls ;-)
>
> best wishes, Justin
>
> Justin Bennett
>
> jus...@justinbennett.nl
> www.justinbennett.nl
> http://jubilee-art.org/
>
> new podcast series: http://soundscaper.com/the_constellation
>
> https://vimeo.com/justinbennett
>
> https://justinbennett.bandcamp.com/
>
>
> > On 24 Jun 2020, at 11:35, sursound-requ...@music.vt.edu wrote:
> >
> > Message: 5
> > Date: Tue, 23 Jun 2020 22:16:17 +0100
> > From: Augustine Leudar <augustineleu...@gmail.com>
> > To: Surround Sound discussion group <sursound@music.vt.edu>
> > Subject: Re: [Sursound] Suitable headphones for monitoring binaural
> >       compositions
> > Message-ID:
> >       <CABx2jurLoqP=
> z5sxuxvz0fa9dtuabkieo7c-tp-puq0w4j0...@mail.gmail.com>
> > Content-Type: text/plain; charset="utf-8"
> >
> > Hi Steve
> > Tx for the reply. No the headphones are not equalised for my pinnae in
> fact
> > not quite sure what you mean by that, iI am talking about using generic
> > hrtfs. It is also possible to localise static objects. Something that
> close
> > to the ear would probably fall firmly within what is called "the cone of
> > confusion" but that's a location itself albeit blurry. Also important to
> > remember I am asking about suitable headphones for monitoring not
> > necessarily the best binaural experience. So the headphones that would
> > translate best to whatever most people would listen on. In the studio
> that
> > used to be ns10s but now is probably genelec. However the concept is the
> > same, which headphones are best to produce binaural on yo successfully
> > translate to the widest range of headphones, preferably without losing
> > quality for those with hi end headphones. In the mastering world this is
> > generally something like bowers and Wilkins speakers.
> >
> > On Tuesday, 23 June 2020, Steven Boardman <boardroomout...@gmail.com>
> wrote:
> >
> >> If your headphones are equalised for your pinnae, then this is surely
> >> negated?
> >> As you aren't moving your headphones, then it shouldn't be a problem, as
> >> they are on axis and your hrtf will remain static, (or non existent with
> >> eq).
> >> I can anecdotally confirm what Fons mentioned.
> >> I have many different flavours of earbuds,  closed and open headphones,
> and
> >> by far the best outer head binaural experience, is with my open back
> ones.
> >> This is without custom eq for my ears, but with a generic flattening eq,
> >> which really improves the effect.
> >> I can imagine it would improve massively using  hrtf for my own ears,
> >> convolved with eq to flatten the response of both my pinnae and
> >> headphones..
> >>
> >> Best
> >>
> >> Steve
>
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 24 Jun 2020 11:06:08 +0100
> From: Augustine Leudar <augustineleu...@gmail.com>
> To: Surround Sound discussion group <sursound@music.vt.edu>
> Subject: Re: [Sursound] Suitable headphones for monitoring binaural
> Message-ID:
>         <CABx2juqnJ5DJg5VTcBtYMSmxxTa_7WYGCrVyqW=
> 5xab_xwo...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Thanks Justin I'll check them out. I have had the HD650 and now have the
> HD600 as they have measured by far the flattest so far. Tx for sharing!
>
> On Wednesday, 24 June 2020, Justin Bennett <j...@bmbcon.demon.nl> wrote:
>
> > Hi Augustine,
> >
> > I have good experience with various Sennheiser cheap open-back headphones
> > for binuaral
> > presentation - we use them a lot for audio-walks with many binaural
> > effects. However each
> > model has a particular frequency response which I almost always correct
> > for in my mix.
> >
> > But for mixing and mastering usually use Beyer Dynamic DT-250?s. These
> are
> > a closed type
> > and also not super- hi-fi but for me they represent the kind of NS-10
> > experience you?re talking about. Also they are incredibly comfortable and
> > handy for field recording, which is what I use them for mostly. Although
> > these days they?re used more for online conference calls ;-)
> >
> > best wishes, Justin
> >
> > Justin Bennett
> >
> > jus...@justinbennett.nl
> > www.justinbennett.nl
> > http://jubilee-art.org/
> >
> > new podcast series: http://soundscaper.com/the_constellation
> >
> > https://vimeo.com/justinbennett
> >
> > https://justinbennett.bandcamp.com/
> >
> >
> > > On 24 Jun 2020, at 11:35, sursound-requ...@music.vt.edu wrote:
> > >
> > > Message: 5
> > > Date: Tue, 23 Jun 2020 22:16:17 +0100
> > > From: Augustine Leudar <augustineleu...@gmail.com>
> > > To: Surround Sound discussion group <sursound@music.vt.edu>
> > > Subject: Re: [Sursound] Suitable headphones for monitoring binaural
> > >       compositions
> > > Message-ID:
> > >       <CABx2jurLoqP=Z5SxuxVz0Fa9DTUaBKiEo7C-tp-pUq0w4j0p1w@mail.
> > gmail.com>
> > > Content-Type: text/plain; charset="utf-8"
> > >
> > > Hi Steve
> > > Tx for the reply. No the headphones are not equalised for my pinnae in
> > fact
> > > not quite sure what you mean by that, iI am talking about using generic
> > > hrtfs. It is also possible to localise static objects. Something that
> > close
> > > to the ear would probably fall firmly within what is called "the cone
> of
> > > confusion" but that's a location itself albeit blurry. Also important
> to
> > > remember I am asking about suitable headphones for monitoring not
> > > necessarily the best binaural experience. So the headphones that would
> > > translate best to whatever most people would listen on. In the studio
> > that
> > > used to be ns10s but now is probably genelec. However the concept is
> the
> > > same, which headphones are best to produce binaural on yo successfully
> > > translate to the widest range of headphones, preferably without losing
> > > quality for those with hi end headphones. In the mastering world this
> is
> > > generally something like bowers and Wilkins speakers.
> > >
> > > On Tuesday, 23 June 2020, Steven Boardman <boardroomout...@gmail.com>
> > wrote:
> > >
> > >> If your headphones are equalised for your pinnae, then this is surely
> > >> negated?
> > >> As you aren't moving your headphones, then it shouldn't be a problem,
> as
> > >> they are on axis and your hrtf will remain static, (or non existent
> with
> > >> eq).
> > >> I can anecdotally confirm what Fons mentioned.
> > >> I have many different flavours of earbuds,  closed and open
> headphones,
> > and
> > >> by far the best outer head binaural experience, is with my open back
> > ones.
> > >> This is without custom eq for my ears, but with a generic flattening
> eq,
> > >> which really improves the effect.
> > >> I can imagine it would improve massively using  hrtf for my own ears,
> > >> convolved with eq to flatten the response of both my pinnae and
> > >> headphones..
> > >>
> > >> Best
> > >>
> > >> Steve
> >
> >
> >
> > _______________________________________________
> > 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.
> >
>
>
> --
> Artist website: www.augustineleudar.com
> Business website: www.magikdoor.net
> +44(0)7555784775
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> https://mail.music.vt.edu/mailman/private/sursound/attachments/20200624/68a80d3c/attachment.html
> >
>
> ------------------------------
>
> Message: 4
> Date: Wed, 24 Jun 2020 11:06:36 +0100
> From: Augustine Leudar <augustineleu...@gmail.com>
> To: Surround Sound discussion group <sursound@music.vt.edu>
> Subject: Re: [Sursound] Suitable headphones for monitoring binaural
>         compositions
> Message-ID:
>         <
> cabx2jupevoglaecj+s7qx1owhx3h5b8cvaszv8pfy3m8yue...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Brilliant Brian tx
>
> On Wednesday, 24 June 2020, Brian KATZ <brian.k...@sorbonne-universite.fr>
> wrote:
>
> >         "it would interesting to see if there are any papers/listening
> > tests which have
> > tested lovcalisation with HRTFs and different types of headphones - are
> > there any ?"
> >
> > Here is at lest 1 study that I am familiar with:
> >
> > D. Sch?nstein, L. Ferr?, and B. Katz, ?Comparison of headphones and
> > equalization for virtual auditory source localization,? in Acoustics?08.
> 9e
> > Congres Fran?ais d?Acoustique of the SFA. Paru dans : JASA, Vol 123, n?5,
> > (Paris), pp. 1?5, 2008, (
> http://webistem.com/acoustics2008/acoustics2008/
> > cd1/data/articles/001080.pdf).
> >
> > --
> > Brian FG Katz, Research Director, CNRS
> > Groupe Lutheries - Acoustique ? Musique
> > Sorbonne Universit?, CNRS, UMR 7190, Institut Jean Le Rond ?'Alembert
> > http://www.dalembert.upmc.fr/home/katz
> >
> > _______________________________________________
> > 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.
> >
>
>
> --
> Artist website: www.augustineleudar.com
> Business website: www.magikdoor.net
> +44(0)7555784775
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> https://mail.music.vt.edu/mailman/private/sursound/attachments/20200624/2d2a8f68/attachment.html
> >
>
> ------------------------------
>
> Message: 5
> Date: Wed, 24 Jun 2020 11:08:39 +0100
> From: Jack Reynolds <jackreynolds...@gmail.com>
> To: Surround Sound discussion group <sursound@music.vt.edu>
> Subject: Re: [Sursound] Rode NT SF1
> Message-ID: <54b509e7-7d3a-4cee-bfc0-56e3a5f93...@gmail.com>
> Content-Type: text/plain; charset=utf-8
>
> You can set the output of the R?de plugin to B-Format ambiX. You may also
> want to experiment with something like harpex for upmixing to higher order
> ambisonics for loudspeaker playback.
>
> Sent from my iPhone
>
> > On 24 Jun 2020, at 10:35, Ross Adams <ross.adams...@gmail.com> wrote:
> >
> > ?Hi Martin,
> > Great thank you!
> > I'm sure i'll be back with questions.
> > Much appreciated,
> > Franco
> > +45 42 50 07 40
> >
> >
> >
> >> On Wed, 24 Jun 2020 at 11:18, PARKER Martin <martin.par...@ed.ac.uk>
> wrote:
> >>
> >> Hi all/Franco, you can use this template to help, see attached.
> >> You'll see the r?de Aformat plugin is set to have input as the mic, and
> >> output as bformat ambix.
> >> You'll need the wonderful IEM suite installed for decoding to binaural,
> >> 5.1 and to a fancier/custom space as shown https://plugins.iem.at/.
> >> You can simply bounce the bformatAmbix track to perform the conversion
> >> from a- to- bformatAmbix.
> >>
> >>
> >> Best
> >>
> >> Martin~
> >>
> >>
> >> ---
> >>
> >> Dr Martin Parker
> >>
> >> Programme Director MSc Sound Design
> >>
> >> Reid School of Music
> >>
> >> Edinburgh College of Art
> >>
> >> University of Edinburgh
> >>
> >> +44(0)7813 217092
> >>
> >> +44(0)131 650 2333
> >>
> >> skype: tinpark
> >>
> >>
> >> Room 3.07
> >>
> >> Alison House
> >>
> >> 12 Nicolson Square
> >>
> >> Edinburgh, EH8 9DF
> >>
> >> Scotland, UK
> >>
> >>
> >> map:
> >> https://goo.gl/maps/trpjm55HiorwpreWA
> >>
> >>
> >> www.soundeducation.net<http://www.soundeducation.net>
> >>
> >> www.tinpark.com<http://www.tinpark.com>
> >>
> >>
> >>
> >> ________________________________
> >> From: Sursound <sursound-boun...@music.vt.edu> on behalf of Ross Adams
> <
> >> ross.adams...@gmail.com>
> >> Sent: 24 June 2020 09:59
> >> To: Surround Sound discussion group <sursound@music.vt.edu>
> >> Subject: [Sursound] Rode NT SF1
> >>
> >> Hello,
> >>
> >> I will be recording ambient sounds using the Rode NT SF1 for a
> multispeaker
> >> performance. It is the first time i have used such a microphone and
> worked
> >> with ambisonics.
> >> Could someone please point me towards or offer information on turning
> the
> >> A-format recordings into B-Format and alternative ways to play back the
> >> b-format field recordings in Reaper without using the Soundfield Rode
> >> PLugin Processor. I may be totally wrong but it only seems to offer 5.1
> or
> >> 7.1 etc and I wish to just play the files back as b-format files.
> >>
> >> I think my understanding of this is right...please do corect me.
> >>
> >> Thank you in advance,
> >> Franco
> >> +45 42 50 07 40
> >> -------------- next part --------------
> >> An HTML attachment was scrubbed...
> >> URL: <
> >>
> https://mail.music.vt.edu/mailman/private/sursound/attachments/20200624/f52dd2cb/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.
> >> The University of Edinburgh is a charitable body, registered in
> Scotland,
> >> with registration number SC005336.
> >> -------------- next part --------------
> >> An HTML attachment was scrubbed...
> >> URL: <
> >>
> https://mail.music.vt.edu/mailman/private/sursound/attachments/20200624/f3043b03/attachment.html
> >>>
> >> -------------- next part --------------
> >> A non-text attachment was scrubbed...
> >> Name: Rode-To-Fancy_template.RPP.zip
> >> Type: application/zip
> >> Size: 7443 bytes
> >> Desc: Rode-To-Fancy_template.RPP.zip
> >> URL: <
> >>
> https://mail.music.vt.edu/mailman/private/sursound/attachments/20200624/f3043b03/attachment.zip
> >>>
> >> _______________________________________________
> >> 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/20200624/f19842fe/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.
>
>
> ------------------------------
>
> Message: 6
> Date: Wed, 24 Jun 2020 12:34:45 +0200
> From: Ross Adams <ross.adams...@gmail.com>
> To: Surround Sound discussion group <sursound@music.vt.edu>
> Subject: Re: [Sursound] Rode NT SF1
> Message-ID:
>         <CACbmBT2a1KN+qHr+T4gV2e3F4xJU0EMufg=
> p2k6w90b+rzg...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Many thanks Jack. This is good to know. I'm just about to delve deeper into
> the plugin along with the IEM Suite.
> +45 42 50 07 40
>
>
>
> On Wed, 24 Jun 2020 at 12:08, Jack Reynolds <jackreynolds...@gmail.com>
> wrote:
>
> > You can set the output of the R?de plugin to B-Format ambiX. You may also
> > want to experiment with something like harpex for upmixing to higher
> order
> > ambisonics for loudspeaker playback.
> >
> > Sent from my iPhone
> >
> > > On 24 Jun 2020, at 10:35, Ross Adams <ross.adams...@gmail.com> wrote:
> > >
> > > ?Hi Martin,
> > > Great thank you!
> > > I'm sure i'll be back with questions.
> > > Much appreciated,
> > > Franco
> > > +45 42 50 07 40
> > >
> > >
> > >
> > >> On Wed, 24 Jun 2020 at 11:18, PARKER Martin <martin.par...@ed.ac.uk>
> > wrote:
> > >>
> > >> Hi all/Franco, you can use this template to help, see attached.
> > >> You'll see the r?de Aformat plugin is set to have input as the mic,
> and
> > >> output as bformat ambix.
> > >> You'll need the wonderful IEM suite installed for decoding to
> binaural,
> > >> 5.1 and to a fancier/custom space as shown https://plugins.iem.at/.
> > >> You can simply bounce the bformatAmbix track to perform the conversion
> > >> from a- to- bformatAmbix.
> > >>
> > >>
> > >> Best
> > >>
> > >> Martin~
> > >>
> > >>
> > >> ---
> > >>
> > >> Dr Martin Parker
> > >>
> > >> Programme Director MSc Sound Design
> > >>
> > >> Reid School of Music
> > >>
> > >> Edinburgh College of Art
> > >>
> > >> University of Edinburgh
> > >>
> > >> +44(0)7813 217092
> > >>
> > >> +44(0)131 650 2333
> > >>
> > >> skype: tinpark
> > >>
> > >>
> > >> Room 3.07
> > >>
> > >> Alison House
> > >>
> > >> 12 Nicolson Square
> > >>
> > >> Edinburgh, EH8 9DF
> > >>
> > >> Scotland, UK
> > >>
> > >>
> > >> map:
> > >> https://goo.gl/maps/trpjm55HiorwpreWA
> > >>
> > >>
> > >> www.soundeducation.net<http://www.soundeducation.net>
> > >>
> > >> www.tinpark.com<http://www.tinpark.com>
> > >>
> > >>
> > >>
> > >> ________________________________
> > >> From: Sursound <sursound-boun...@music.vt.edu> on behalf of Ross
> Adams
> > <
> > >> ross.adams...@gmail.com>
> > >> Sent: 24 June 2020 09:59
> > >> To: Surround Sound discussion group <sursound@music.vt.edu>
> > >> Subject: [Sursound] Rode NT SF1
> > >>
> > >> Hello,
> > >>
> > >> I will be recording ambient sounds using the Rode NT SF1 for a
> > multispeaker
> > >> performance. It is the first time i have used such a microphone and
> > worked
> > >> with ambisonics.
> > >> Could someone please point me towards or offer information on turning
> > the
> > >> A-format recordings into B-Format and alternative ways to play back
> the
> > >> b-format field recordings in Reaper without using the Soundfield Rode
> > >> PLugin Processor. I may be totally wrong but it only seems to offer
> 5.1
> > or
> > >> 7.1 etc and I wish to just play the files back as b-format files.
> > >>
> > >> I think my understanding of this is right...please do corect me.
> > >>
> > >> Thank you in advance,
> > >> Franco
> > >> +45 42 50 07 40
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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.
> > >> The University of Edinburgh is a charitable body, registered in
> > Scotland,
> > >> with registration number SC005336.
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> > >>>
> > >> _______________________________________________
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> here,
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> > _______________________________________________
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> > edit account or options, view archives and so on.
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> ------------------------------
>
> Message: 7
> Date: Wed, 24 Jun 2020 15:13:57 +0100
> From: Augustine Leudar <augustineleu...@gmail.com>
> To: Surround Sound discussion group <sursound@music.vt.edu>
> Subject: Re: [Sursound] Suitable headphones for monitoring binaural
>         compositions
> Message-ID:
>         <
> cabx2jurphowymhqjfvjarvxh_snh9-givxh3l560psaquu2...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> PS Fons - very interesting about the occlusion effect - very good point !!
>
> On Sat, 20 Jun 2020 at 09:26, Fons Adriaensen <f...@linuxaudio.org> wrote:
>
> > On Fri, Jun 19, 2020 at 11:12:38PM +0100, Augustine Leudar wrote:
> >
> > > I normally do installation work but lockdown has steered me towards
> > working
> > > on binaural work that can be streamed. Obviously, with speakers, I
> have a
> > > calibrated system, room treatment etc
> >
> > > I have a pair of Sennheiser HD600s
> > > that I use but it occurs to me that these kinds of over-ear headphones
> > may
> > > not be best suited for binaural work as there may be some pinna
> filtering
> > > seeing as the driver is as large as my pinna, so I was thinking earbuds
> > > might be more suitable as they bypass the pinna altogether and you are
> > just
> > > left with the HRTFs
> >
> > In may experience binaural works best with open headphones. Earbuds have
> > a very strong occlusion effect, and there is experimental evidence that
> > this prevents externalisation.
> >
> > Occlusion means that the acoustic impedance as seen by the ear is changed
> > by being in a closed volume. It's why you hear your own voice much
> stronger
> > when you close the ear canal.
> >
> > It is possible to remove occlusion even with closed headphones, but this
> > requires active systems. Noise cancellation using feedback from within
> > the headphone will do this to some degree as a side effect. Feedforward
> > systems don't. This is an area of active research (in which I'm
> involved).
> >
> > That said, there's a lot of difference in binaural performance even
> > among high quality open headphones. One factor that seems to have an
> > influence is how well the phase/delay response is matched between the
> > two sides. For some headphones this is intentionally 'randomised',
> > some people seem to prefer that for normal (non-binaural) listening.
> > It's quite simple to test: listen to a mono signal. If the responses
> > are well matched you should get a solid image dead center. If not,
> > even a mono signal will be somewhat 'diffuse'. This is called the
> > 'Tonmeister test' in some circles :-)
> >
> > The argument that open headphones would add a second 'pinna response'
> > to a binaural signal doesn't hold. The whole point of the pinnae is
> > that the response depends on direction, and with headphones that
> > is not the case. What remains is a fixed effect that can be removed
> > by normal equalisation or as part of the design.
> >
> > Ciao,
> >
> > --
> > FA
> >
> > _______________________________________________
> > 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.
> >
>
>
> --
> Artist website: www.augustineleudar.com
> Business website: www.magikdoor.net
> +44(0)7555784775
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