Subject: Re: [AUDITORY] Seeking advice on using ANF firing rate to reslove front-back confusion in sound localization model From: Sathish Kumar <sathish.sreeni58@xxxxxxxx> Date: Wed, 26 Feb 2025 18:05:31 +0530--000000000000d88f5a062f0acfae Content-Type: text/plain; charset="UTF-8" Dear Qin, I agree with Prof. Jan Schnupp that some pre-assumptions are necessary for your problem. In one of my research projects, I simulated the auditory nerve responses of spatialized signals using the zillany2018 model, and their Direction of Arrival was estimated using the dietz2011 <https://amtoolbox.org/amt-1.6.0/doc/models/dietz2011.php> model. However, I found that the responses were interpretable only for fine structure data, not envelopes. From my understanding, the Dietz model considers only sound sources within the frontal hemifield. For front-back localization, you could use cross-frequency integration to detect the high-frequency attenuation caused by the pinna, allowing you to determine whether the sound source is in front or back hemifield. This can then be followed by the Dietz model to estimate the DoA, as ITD and ILDs are nearly identical for front and back azimuths. Best regards, -- Sathish Kumar PhD Research Scholar Department of Audiology and SLP Kasturba Medical College (MAHE), Mangalore Mob: 9789447666 || E-mail: sathish.sreeni58@xxxxxxxx <https://www.linkedin.com/in/sathish-kumar-0815121a9/> <https://www.researchgate.net/profile/Sathish-Kumar-163> <https://github.com/SATHish64103> --000000000000d88f5a062f0acfae Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">Dear Qin,<div>I agree with Prof. Jan Schnupp that some pre= -assumptions are necessary for your problem. In one of my research projects= , I simulated the auditory nerve responses of spatialized signals using the= zillany2018 model, and their Direction of Arrival was estimated using the= =C2=A0<a href=3D"https://amtoolbox.org/amt-1.6.0/doc/models/dietz2011.php">= dietz2011</a>=C2=A0model. However, I found that the responses were interpre= table only for fine structure data, not envelopes.=C2=A0</div><div><br></di= v><div>From my understanding, the Dietz model considers only=C2=A0sound sou= rces within the frontal hemifield. For front-back localization, you could u= se cross-frequency integration to detect the high-frequency attenuation cau= sed by the pinna, allowing you to determine whether the sound source is in = front or back hemifield. This can then be followed by the Dietz model to es= timate the DoA, as ITD and ILDs are nearly identical for front and back azi= muths.=C2=A0</div><div><br></div><div>Best regards,</div><span class=3D"gma= il_signature_prefix">--<span class=3D"gmail-Apple-converted-space">=C2=A0</= span></span><br><div dir=3D"ltr" class=3D"gmail_signature"><div dir=3D"ltr"= ><span style=3D"color:rgb(0,0,0)"><p dir=3D"ltr" style=3D"line-height:1.2;m= argin-top:0pt;margin-bottom:0pt"><span style=3D"color:rgb(32,33,36);font-we= ight:700;vertical-align:baseline;white-space:pre-wrap"><font face=3D"arial,= sans-serif">Sathish Kumar</font></span></p><p dir=3D"ltr" style=3D"line-he= ight:1.2;margin-top:0pt;margin-bottom:0pt"><span style=3D"color:rgb(32,33,3= 6);vertical-align:baseline;white-space:pre-wrap"><font face=3D"arial, sans-= serif">PhD Research Scholar</font></span></p><p dir=3D"ltr" style=3D"line-h= eight:1.2;margin-top:0pt;margin-bottom:0pt"><span style=3D"color:rgb(32,33,= 36);vertical-align:baseline;white-space:pre-wrap"><font face=3D"arial, sans= -serif">Department of Audiology and SLP</font></span></p><p dir=3D"ltr" sty= le=3D"line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style=3D"colo= r:rgb(32,33,36);vertical-align:baseline;white-space:pre-wrap"><font face=3D= "arial, sans-serif">Kasturba Medical College (MAHE), Mangalore</font></span= ></p><p style=3D"line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span st= yle=3D"color:rgb(32,33,36);vertical-align:baseline;white-space:pre-wrap"><f= ont face=3D"arial, sans-serif">Mob: 9789447666 || E-mail: <a href=3D"mailto= :sathish.sreeni58@xxxxxxxx" target=3D"_blank">sathish.sreeni58@xxxxxxxx</= a></font></span></p><p dir=3D"ltr" style=3D"line-height:1.2;margin-top:0pt;= margin-bottom:0pt"><br></p></span></div></div><div><span style=3D"color:rgb= (0,0,0);font-size:11pt;font-family:Arial,sans-serif;vertical-align:baseline= ;white-space:pre-wrap"><span style=3D"border:medium;display:inline-block;ov= erflow:hidden;width:38px;height:38px"><a href=3D"https://www.linkedin.com/i= n/sathish-kumar-0815121a9/" target=3D"_blank"><img src=3D"https://lh6.googl= eusercontent.com/5byXAEkLcmDiDEuMoWneEZQdjIKw6iXHjfmLsRbz0FYhcx20eR5fkDLbv6= Pea9afWwT5tctVYd0IA6YZG3DjVnpO5wv6bekCzl0jnN0rHbUDj_i0_ltWn5DcTWV_d3VZUj0ve= e8E3Sn4M_fstbBxj8Q" width=3D"38" height=3D"38" class=3D"gmail-CToWUd" style= =3D"margin-left: 0px; margin-top: 0px;"></a></span></span><span style=3D"co= lor:rgb(0,0,0);font-size:11pt;font-family:Arial,sans-serif;vertical-align:b= aseline;white-space:pre-wrap"> =C2=A0 </span><span style=3D"color:rgb(0,0,0= );font-size:11pt;font-family:Arial,sans-serif;vertical-align:baseline;white= -space:pre-wrap"><span style=3D"border:medium;display:inline-block;overflow= :hidden;width:38px;height:38px"><a href=3D"https://www.researchgate.net/pro= file/Sathish-Kumar-163" target=3D"_blank"><img src=3D"https://lh5.googleuse= rcontent.com/xK4xzers236Zr7hl6kTXCcf28ETM6L4XYqRBNoIyXKXLTMavTMfvDdDVpQZC_u= arIITzhAVe-L36vaHFM-9zalrKP9vk45O-eCzHcQdE7pQ4hbJUEqYILghXvWrhlqGbOL6obnons= C7O-CDSXgVcxQk" width=3D"38" height=3D"38" class=3D"gmail-CToWUd" style=3D"= margin-left: 0px; margin-top: 0px;"></a></span></span><span style=3D"color:= rgb(0,0,0);font-size:11pt;font-family:Arial,sans-serif;vertical-align:basel= ine;white-space:pre-wrap">=C2=A0=C2=A0=C2=A0</span><span style=3D"color:rgb= (0,0,0);font-size:11pt;font-family:Arial,sans-serif;vertical-align:baseline= ;white-space:pre-wrap"><span style=3D"border:medium;display:inline-block;ov= erflow:hidden;width:38px;height:38px"><a href=3D"https://github.com/SATHish= 64103" target=3D"_blank"><img src=3D"https://lh5.googleusercontent.com/TeW5= o2pJsNEw0t-KL4RMnHMeyOjtzL8-GjpsM26pbcbFdR9wKh8FfouojMU57VaePdryTPyW8Y9jXgw= UVNfqHDvlrn_gUM8HwlgzD_pa06vUm0Tw9gfRYz1Pi7PZqRQe32_q9S7Gc0c9DR_YztA2C20" w= idth=3D"38" height=3D"38" class=3D"gmail-CToWUd" style=3D"margin-left: 0px;= margin-top: 0px;"></a></span></span>=C2=A0=C2=A0 =C2=A0 =C2=A0=C2=A0</div>= </div> --000000000000d88f5a062f0acfae--