Subject: Re: [AUDITORY] ITD KEMAR/HATS data as a function of frequency and azimuth From: Brian FG Katz <brian.katz@xxxxxxxx> Date: Wed, 24 Jan 2024 10:46:37 +0100This is a multipart message in MIME format. ------=_NextPart_000_068F_01DA4EB2.9BE85210 Content-Type: multipart/alternative; boundary="----=_NextPart_001_0690_01DA4EB2.9BE85210" ------=_NextPart_001_0690_01DA4EB2.9BE85210 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Dear Dr. Rhebergen, list,=20 =20 There has been some discussion over the years about the frequency = dependence of ITD. While of course it is possible to calculate almost = anything, the physicality of such a notion remains tenuous in my = opinion, as air is not particularly a dispersive medium (i.e. low = frequencies are not travelling around the head faster that higher = frequencies). I therefore offer several points for thought on the = question=E2=80=A6=20 =20 In general, when considering ITD data, one must be aware of the = calculation method, as different methods can produce significantly = different results. See for example our study a decade ago now on the = subject: =20 B. F. G. Katz and M. Noisternig, =E2=80=9CA comparative study of = interaural time delay estimation methods,=E2=80=9D J Acoust Soc Am, vol. = 135, no. 6, pp. 3530=E2=80=933540, 2014, doi:10.1121/1.4875714 = <https://doi.org/10.1121/1.4875714>=20 =20 Following this, there remains the question of which ITD estimation = method is most coherent with perception. A follow-up study on this point = was also carried out on that point as well: =20 A. Andreopoulou and B. F. G. Katz, =E2=80=9CIdentification of = perceptually relevant methods of inter-aural time difference = estimation,=E2=80=9D J Acoust Soc Am, vol. 142, no. 2, pp. = 588=E2=80=93598, 2017, doi:10.1121/1.4996457 = <https://doi.org/10.1121/1.4996457> . =20 The following chapter also provides an overview and some graphical data = on ITD for the Neumann KU100, including function of distance: =20 B. F. G. Katz and R. Nicol, =E2=80=9CBinaural spatial = reproduction,=E2=80=9D in Sensory Evaluation of Sound (N. Zacharov, = ed.), pp. 349=E2=80=93388, Boca Raton: CRC Press, 2019, (url) = <http://www.crcpress.com/Sensory-Evaluation-of-Sound/Zacharov/p/book/9781= 498751360> . ISBN 978-1-4987-5136-0. =20 Cheers, -Brian -- Brian FG Katz, Research Director, CNRS Groupe Lutheries - Acoustique =E2=80=93 Musique Sorbonne Universit=C3=A9, CNRS, UMR 7190, Institut Jean Le Rond = =E2=88=82'Alembert=20 <http://www.dalembert.upmc.fr/home/katz> = http://www.dalembert.upmc.fr/home/katz =20 De : AUDITORY - Research in Auditory Perception = <AUDITORY@xxxxxxxx> De la part de Rhebergen, K.S. (Koen) Envoy=C3=A9 : mardi 23 janvier 2024 15:17 =C3=80 : AUDITORY@xxxxxxxx Objet : [AUDITORY] ITD KEMAR/HATS data as a function of frequency and = azimuth =20 Dear list, =20 I am looking for a lookup table (or matlab code ) with ITD data measured = with a KEMAR of hats in an anachoric room as a function of frequency = (~100Hz to 8000Hz) and azimuth (0:5:180) If someone can send me a copy or matlab code it would be greatly = appreciated. =20 With kind regards Koen Rhebergen =20 =20 =20 =20 =20 Dr. K.S. Rhebergen Klinisch fysicus - audioloog | functiecentrum KNO (AZU) | Kind & = Communicatie (WKZ) Universitair Medisch Centrum Utrecht=20 ------=_NextPart_001_0690_01DA4EB2.9BE85210 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" = xmlns:o=3D"urn:schemas-microsoft-com:office:office" = xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" = xmlns=3D"http://www.w3.org/TR/REC-html40"><head><meta = http-equiv=3DContent-Type content=3D"text/html; charset=3Dutf-8"><meta = name=3DGenerator content=3D"Microsoft Word 15 (filtered medium)"><!--[if = !mso]><style>v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} </style><![endif]--><style><!-- /* Font Definitions */ @xxxxxxxx {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @xxxxxxxx {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @xxxxxxxx {font-family:"Segoe UI"; panose-1:2 11 5 2 4 2 4 2 2 3;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0cm; font-size:11.0pt; font-family:"Calibri",sans-serif; mso-fareast-language:EN-US;} a:link, span.MsoHyperlink {mso-style-priority:99; color:#0563C1; text-decoration:underline;} span.EmailStyle20 {mso-style-type:personal-compose; font-family:"Calibri",sans-serif; color:windowtext;} span.ptmri8t- {mso-style-name:ptmri8t-;} .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt;} @xxxxxxxx WordSection1 {size:612.0pt 792.0pt; margin:70.85pt 70.85pt 70.85pt 70.85pt;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--></head><body lang=3DEN-GB = link=3D"#0563C1" vlink=3D"#954F72" style=3D'word-wrap:break-word'><div = class=3DWordSection1><p class=3DMsoNormal>Dear Dr. Rhebergen, list, = <o:p></o:p></p><p class=3DMsoNormal><o:p> </o:p></p><p = class=3DMsoNormal>There has been some discussion over the years about = the frequency dependence of ITD. While of course it is possible to = calculate almost anything, the physicality of such a notion remains = tenuous in my opinion, as air is not particularly a dispersive medium = (i.e. low frequencies are not travelling around the head faster that = higher frequencies). I therefore offer several points for thought on the = question=E2=80=A6 <o:p></o:p></p><p = class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>In general, = when considering ITD data, one must be aware of the calculation method, = as different methods can produce significantly different results. See = for example our study a decade ago now on the subject:<o:p></o:p></p><p = class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal = style=3D'margin-left:36.0pt'><span = style=3D'color:black'>B. F. G. Katz and M. Noisternig, = =E2=80=9CA comparative study of interaural time delay estimation = methods,=E2=80=9D <span class=3Dptmri8t-><i>J Acoust Soc = Am</i></span>, vol. 135, no. 6, pp. 3530=E2=80=933540, = 2014, doi:</span><a = href=3D"https://doi.org/10.1121/1.4875714">10.1121/1.4875714</a><o:p></o:= p></p><p class=3DMsoNormal><o:p> </o:p></p><p = class=3DMsoNormal>Following this, there remains the question of which = ITD estimation method is most coherent with perception. A follow-up = study on this point was also carried out on that point as = well:<o:p></o:p></p><p class=3DMsoNormal><o:p> </o:p></p><p = class=3DMsoNormal style=3D'margin-left:36.0pt'><span = style=3D'color:black'>A. Andreopoulou and B. F. G. Katz, = =E2=80=9CIdentification of perceptually relevant methods of inter-aural = time difference estimation,=E2=80=9D <span class=3Dptmri8t-><i>J = Acoust Soc Am</i></span>, vol. 142, no. 2, = pp. 588=E2=80=93598, 2017, doi:</span><a = href=3D"https://doi.org/10.1121/1.4996457">10.1121/1.4996457</a><span = style=3D'color:black'>.<o:p></o:p></span></p><p = class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>The = following chapter also provides an overview and some graphical data on = ITD for the Neumann KU100, including function of = distance:<o:p></o:p></p><p class=3DMsoNormal><o:p> </o:p></p><p = class=3DMsoNormal style=3D'margin-left:36.0pt'><span = style=3D'color:black'>B. F. G. Katz and R. Nicol, = =E2=80=9CBinaural spatial reproduction,=E2=80=9D in <span = class=3Dptmri8t-><i>Sensory</i></span> <span = class=3Dptmri8t-><i>Evaluation of = Sound </i></span>(N. Zacharov, ed.), pp. 349=E2=80=93388, = Boca Raton: CRC Press, 2019, </span><a = href=3D"http://www.crcpress.com/Sensory-Evaluation-of-Sound/Zacharov/p/bo= ok/9781498751360">(url)</a><span style=3D'color:black'>. ISBN = 978-1-4987-5136-0.</span><o:p></o:p></p><p = class=3DMsoNormal><o:p> </o:p></p><p = class=3DMsoNormal>Cheers,<o:p></o:p></p><p = class=3DMsoNormal>-Brian<o:p></o:p></p><div><p class=3DMsoNormal><span = style=3D'color:#1F497D;mso-fareast-language:EN-GB'>--</span><span = style=3D'mso-fareast-language:EN-GB'><o:p></o:p></span></p><p = class=3DMsoNormal><span = style=3D'color:#1F497D;mso-fareast-language:EN-GB'>Brian FG Katz, = Research Director, CNRS</span><span = style=3D'mso-fareast-language:EN-GB'><o:p></o:p></span></p><p = class=3DMsoNormal><span lang=3DFR = style=3D'font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-GB'>Group= e Lutheries - Acoustique =E2=80=93 Musique</span><span lang=3DFR = style=3D'mso-fareast-language:EN-GB'><o:p></o:p></span></p><p = class=3DMsoNormal><span lang=3DFR = style=3D'font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-GB'>Sorbo= nne Universit=C3=A9, CNRS, UMR 7190, Institut Jean Le Rond = =E2=88=82'Alembert </span><span lang=3DFR = style=3D'mso-fareast-language:EN-GB'><o:p></o:p></span></p><p = class=3DMsoNormal><span lang=3DFR = style=3D'color:#1F497D;mso-fareast-language:EN-GB'><a = href=3D"http://www.dalembert.upmc.fr/home/katz"><span = style=3D'color:blue'>http://www.dalembert.upmc.fr/home/katz</span></a></s= pan><span lang=3DFR = style=3D'mso-fareast-language:EN-GB'><o:p></o:p></span></p></div><p = class=3DMsoNormal><span lang=3DFR><o:p> </o:p></span></p><div><div = style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm = 0cm 0cm'><p class=3DMsoNormal><b><span lang=3DFR = style=3D'mso-fareast-language:EN-GB'>De :</span></b><span lang=3DFR = style=3D'mso-fareast-language:EN-GB'> AUDITORY - Research in Auditory = Perception <AUDITORY@xxxxxxxx> <b>De la part de</b> = Rhebergen, K.S. (Koen)<br><b>Envoy=C3=A9 :</b> mardi 23 janvier = 2024 15:17<br><b>=C3=80 :</b> = AUDITORY@xxxxxxxx<br><b>Objet :</b> [AUDITORY] ITD = KEMAR/HATS data as a function of frequency and = azimuth<o:p></o:p></span></p></div></div><p = class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal><span = lang=3DNL>Dear list,<o:p></o:p></span></p><p class=3DMsoNormal><span = lang=3DNL><o:p> </o:p></span></p><p class=3DMsoNormal = style=3D'margin-bottom:12.0pt'><span lang=3DEN-US = style=3D'font-size:10.5pt;font-family:"Segoe = UI",sans-serif;color:black;background:white'>I am looking for a lookup = table (or matlab code ) with ITD data measured with a KEMAR of hats in = an anachoric room as a function of frequency (~100Hz to 8000Hz) and = azimuth (0:5:180)</span><span lang=3DEN-US = style=3D'font-size:10.5pt;font-family:"Segoe = UI",sans-serif;color:black'><o:p></o:p></span></p><p = class=3DMsoNormal><span lang=3DEN-US = style=3D'font-size:10.5pt;font-family:"Segoe = UI",sans-serif;color:black'>If someone can send me a copy or matlab code = it would be greatly appreciated.</span><span = lang=3DEN-US><o:p></o:p></span></p><p class=3DMsoNormal><span = lang=3DEN-US><o:p> </o:p></span></p><p class=3DMsoNormal><span = lang=3DNL style=3D'font-family:"Segoe = UI",sans-serif;color:black;mso-fareast-language:NL'>With kind = regards<o:p></o:p></span></p><p class=3DMsoNormal><b><span lang=3DNL = style=3D'font-family:"Segoe = UI",sans-serif;color:#1F497D;mso-fareast-language:NL'>Koen = Rhebergen<o:p></o:p></span></b></p><p class=3DMsoNormal><span lang=3DNL = style=3D'font-size:7.5pt;font-family:"Segoe = UI",sans-serif;color:black;mso-fareast-language:NL'><o:p> </o:p></sp= an></p><p class=3DMsoNormal><span lang=3DNL style=3D'font-family:"Segoe = UI",sans-serif;mso-fareast-language:NL'><o:p> </o:p></span></p><p = class=3DMsoNormal><span lang=3DNL style=3D'font-family:"Segoe = UI",sans-serif;color:black;mso-fareast-language:NL'><img border=3D0 = width=3D161 height=3D47 style=3D'width:1.675in;height:.4916in' = id=3D"Afbeelding_x0020_1" src=3D"cid:image001.png@xxxxxxxx" = alt=3D"Universitair Medisch Centrum Utrecht"></span><span lang=3DNL = style=3D'font-family:"Segoe = UI",sans-serif;color:black;mso-fareast-language:NL'><o:p></o:p></span></p= ><p class=3DMsoNormal><span lang=3DNL = style=3D'font-size:7.5pt;font-family:"Segoe = UI",sans-serif;color:black;mso-fareast-language:NL'><o:p> </o:p></sp= an></p><p class=3DMsoNormal><span lang=3DNL = style=3D'font-size:7.5pt;font-family:"Segoe = UI",sans-serif;color:black;mso-fareast-language:NL'><o:p> </o:p></sp= an></p><p class=3DMsoNormal><span lang=3DNL = style=3D'font-size:7.5pt;font-family:"Segoe = UI",sans-serif;color:black;mso-fareast-language:NL'><o:p> </o:p></sp= an></p><p class=3DMsoNormal><span lang=3DNL = style=3D'font-size:9.0pt;font-family:"Segoe = UI",sans-serif;color:black;mso-fareast-language:NL'>Dr. K.S. = Rhebergen<o:p></o:p></span></p><p class=3DMsoNormal = style=3D'text-align:justify'><span lang=3DNL = style=3D'font-size:9.0pt;font-family:"Segoe = UI",sans-serif;color:black;mso-fareast-language:NL'>Klinisch fysicus - = audioloog | functiecentrum KNO (AZU) | Kind & Communicatie = (WKZ)<o:p></o:p></span></p><p class=3DMsoNormal = style=3D'text-align:justify'><span lang=3DNL = style=3D'font-size:9.0pt;font-family:"Segoe = UI",sans-serif;color:black;mso-fareast-language:NL'>Universitair Medisch = Centrum Utrecht <o:p></o:p></span></p></div></body></html> ------=_NextPart_001_0690_01DA4EB2.9BE85210-- ------=_NextPart_000_068F_01DA4EB2.9BE85210 Content-Type: image/png; 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