Subject: [AUDITORY] CARFAC v2 Release From: "Richard F. Lyon" <0000030301ff4bce-dmarc-request@xxxxxxxx> Date: Wed, 15 May 2024 21:40:25 -0700--0000000000002aa3a206188ad6bf Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable If you use CARFAC, or want an efficient and realistic cochlear model that you can back-propagate through, you might find these updates useful, especially the new Python/JAX version. On Github: https://github.com/google/carfac This paper on arXiv describes the changes, bug fixes, and new v2 versions: https://arxiv.org/abs/2404.17490 The CARFAC v2 Cochlear Model in Matlab, NumPy, and JAX Richard F. Lyon, Rob Schonberger, Malcolm Slaney, Mihajlo Velimirovi=C4=87, Honglin Yu Abstract: The open-source CARFAC (Cascade of Asymmetric Resonators with Fast-Acting Compression) cochlear model is upgraded to version 2, with improvements to the Matlab implementation, and with new Python/NumPy and JAX implementations -- but C++ version changes are still pending. One change addresses the DC (direct current, or zero frequency) quadratic distortion anomaly previously reported; another reduces the neural synchrony at high frequencies; the others have little or no noticeable effect in the default configuration. A new feature allows modeling a reduction of cochlear amplifier function, as a step toward a differentiable parameterized model of hearing impairment. In addition, the integration into the Auditory Model Toolbox (AMT) has been extensively improved, as the prior integration had bugs that made it unsuitable for including CARFAC in multi-model comparisons. Dick --0000000000002aa3a206188ad6bf Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">If = you use CARFAC, or want an efficient and realistic cochlear model that you = can back-propagate through, you might find these updates useful, especially= the new Python/JAX version.</div><div class=3D"gmail_default" style=3D"fon= t-size:small"><br></div><div class=3D"gmail_default" style=3D"font-size:sma= ll">On Github:=C2=A0=C2=A0 <a href=3D"https://github.com/google/carfac">htt= ps://github.com/google/carfac</a></div><div class=3D"gmail_default" style= =3D"font-size:small"><br></div><div class=3D"gmail_default" style=3D"font-s= ize:small">This paper on arXiv describes the changes, bug fixes, and new v2= versions:</div><div class=3D"gmail_default" style=3D"font-size:small"><a h= ref=3D"https://arxiv.org/abs/2404.17490" target=3D"_blank">https://arxiv.or= g/abs/2404.17490</a></div><div class=3D"gmail_default" style=3D"font-size:s= mall"><br></div><div class=3D"gmail_default" style=3D"font-size:small">The = CARFAC v2 Cochlear Model in Matlab, NumPy, and JAX<br>Richard F. Lyon, Rob = Schonberger, Malcolm Slaney, Mihajlo Velimirovi=C4=87, Honglin Yu<br><br>Ab= stract:=C2=A0 The open-source CARFAC (Cascade of Asymmetric Resonators with= Fast-Acting Compression) cochlear model is upgraded to version 2, with imp= rovements to the Matlab implementation, and with new Python/NumPy and JAX i= mplementations -- but C++ version changes are still pending. One change add= resses the DC (direct current, or zero frequency) quadratic distortion anom= aly previously reported; another reduces the neural synchrony at high frequ= encies; the others have little or no noticeable effect in the default confi= guration. A new feature allows modeling a reduction of cochlear amplifier f= unction, as a step toward a differentiable parameterized model of hearing i= mpairment. In addition, the integration into the Auditory Model Toolbox (AM= T) has been extensively improved, as the prior integration had bugs that ma= de it unsuitable for including CARFAC in multi-model comparisons. </div><di= v class=3D"gmail_default" style=3D"font-size:small"><br></div><div class=3D= "gmail_default" style=3D"font-size:small">Dick</div><div class=3D"gmail_def= ault" style=3D"font-size:small"><br></div><div class=3D"gmail_default" styl= e=3D"font-size:small"><br></div></div> --0000000000002aa3a206188ad6bf--