Subject: Re: How good is inter-aural frequency or pitch matching in normal humans? From: Leon van Noorden <leonvannoorden@xxxxxxxx> Date: Tue, 30 Jun 2015 09:08:03 +0200 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>--Apple-Mail=_1E6C7E77-C639-415F-B164-5084B36D31AB Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Dear Jan, perhaps this helps: = http://www.mmk.ei.tum.de/fileadmin/w00bqn/www/Personen/Terhardt/ter/top/ps= hifts.html Regards, Leon van Noorden On 29 Jun 2015, at 15:44, Jan Schnupp <jan.schnupp@xxxxxxxx> wrote: > Dear List, >=20 > I have had a conversation with a musically keen retired physicist who = assured me that when he holds up a tuning fork to one ear he hears the = pitch of the tuning fork about a semitone lower than at the other ear. I = had to say that I found that surprising. We always assume that there has = to be a good alignment of frequency channels going into the binaural = centers of the brainstem for example, and much effort is invested in = trying to improve "inter-aural pitch matching" for cochlear implant = patients. But I have to admit I know of no formal studies that have = actually measured how good inter-aural pitch matching would be for = normally hearing subjects, and whether a difference of a semitone (after = all, only a few % in absolute terms) is absurdly large or within the = expected human variability. Would any of you know of any papers that = have looked at this? >=20 > Best, >=20 > Jan=20 >=20 > --=20 > Prof Jan Schnupp > University of Oxford > Dept. of Physiology, Anatomy and Genetics > Sherrington Building - Parks Road > Oxford OX1 3PT - UK > +44-1865-282012 > http://jan.schnupp.net --Apple-Mail=_1E6C7E77-C639-415F-B164-5084B36D31AB Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html = charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Dear = Jan,<div><br><div>perhaps this helps:</div><div><br></div><div><a = href=3D"http://www.mmk.ei.tum.de/fileadmin/w00bqn/www/Personen/Terhardt/te= r/top/pshifts.html">http://www.mmk.ei.tum.de/fileadmin/w00bqn/www/Personen= /Terhardt/ter/top/pshifts.html</a></div><div><br></div><div>Regards,</div>= <div>Leon van Noorden</div><div><br><div><div>On 29 Jun 2015, at 15:44, = Jan Schnupp <<a = href=3D"mailto:jan.schnupp@xxxxxxxx">jan.schnupp@xxxxxxxx</a>>= ; wrote:</div><br class=3D"Apple-interchange-newline"><blockquote = type=3D"cite"><div dir=3D"ltr">Dear List,<div><br></div><div>I have had = a conversation with a musically keen retired physicist who assured me = that when he holds up a tuning fork to one ear he hears the pitch of the = tuning fork about a semitone lower than at the other ear. I had to say = that I found that surprising. We always assume that there has to be a = good alignment of frequency channels going into the binaural centers of = the brainstem for example, and much effort is invested in trying to = improve "inter-aural pitch matching" for cochlear implant patients. But = I have to admit I know of no formal studies that have actually measured = how good inter-aural pitch matching would be for normally hearing = subjects, and whether a difference of a semitone (after all, only a few = % in absolute terms) is absurdly large or within the expected human = variability. Would any of you know of any papers that have looked at = this?</div><div><br></div><div>Best,</div><div><br></div><div>Jan <br= clear=3D"all"><div><br></div>-- <br><div class=3D"gmail_signature">Prof = Jan Schnupp<br>University of Oxford<br>Dept. of Physiology, Anatomy and = Genetics<br>Sherrington Building - Parks Road<br>Oxford OX1 3PT - = UK<br>+44-1865-282012<br><a href=3D"http://jan.schnupp.net/" = target=3D"_blank">http://jan.schnupp.net</a></div> </div></div> </blockquote></div><br></div></div></body></html>= --Apple-Mail=_1E6C7E77-C639-415F-B164-5084B36D31AB--