I found this paper quite a while ago [1]. I suppose it tries to answer exactly the question you have.
However, I find it difficult to judge whether the employed way of simulating different sets of headphones via impulse responses is really "transparent" there. Even if done to the best of technical ability, I doubt that the simulation can provide an accurate representation of another headphones' ear signals in the subjects ears (also since HRTFs an HRIRs of a dummy head were used). On a perceptual level however, they state that the simulation works okay by referencing former studies. As other people also mentioned, occlusion (according to open / closed back headphones / earbuds) has a big influence on perceived attributes of binaural reproduction. This is one point which I think is very difficult or even impossible to simulate without actually employing the individual headsets (I imagine it requires extensive technical effort and even more individual tuning for each subject). However, learning about the influence of different (low cost) headphone magnitude spectra is of course valuable. :) [1] P. Gutierrez-Parera and J. J. Lopez, “Influence of the quality of Consumer Headphones in the Perception of Spatial Audio,” Appl. Sci., vol. 6, no. 5, pp. 1–18, 2016, doi: 10.3390/app6040117. https://www.mdpi.com/2076-3417/6/4/117/pdf Best, /Hannes On 2020-06-23 22:23, Augustine Leudar wrote: > "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. " > > Well except the headphones do have a direction if they are outside your > Pinnae - in the case of my HD6000s the driver is about 2 cm outside my > pinnae in the middle of my ear so they would have whatever the HRTF is for > being close to / next to your ear, in the same way, I guess a mosquito has > when it flies close to your ear can be localised as it flies past the same > position, admittedly that is a moving object unlike headphones ... 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 ? > > 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. >> > > -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: OpenPGP digital signature URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20200623/b5420332/attachment.asc> _______________________________________________ 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.
