Subject: [AUDITORY] Sottek Hearing Model sound quality metrics loudness, tonality, roughness (ECMA-418-2:2025) implemented in MATLAB and python From: Michael Lotinga <0000043e17f3b252-dmarc-request@xxxxxxxx> Date: Fri, 31 Oct 2025 15:43:44 +0000--_000_AM6PR01MB5750EC8DCB31539210124C8FACF8AAM6PR01MB5750eurp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Dear list, If you are involved in psychoacoustics, sound quality and perception, you m= ay be interested to learn that there are now available open source software= implementations of Sottek's Hearing Model metrics for loudness, tonality a= nd roughness, as defined in the ECMA-418-2:2025 standard. Some MATLAB implementations were made available last year, and then earlier= this year were incorporated into the SQAT (Sound Quality Analysis Toolbox)= library (repo: https://github.com/ggrecow/SQAT). A corresponding conference paper documenting the verification of these impl= ementations was presented at Forum Acusticum and is also available open acc= ess: https://www.researchgate.net/publication/392904348 More recently, a python translation was completed (open source repo: https:= //github.com/mlotinga/sottek-hearing-model/), and the functions are now ava= ilable as an installable package via PyPI. These can be installed using: >>> pip install sottek-hearing-model I hope you find these tools useful in your research and work. The applicabl= e open access licence is GPL3<https://www.gnu.org/licenses/gpl-3.0.en.html>= . All the best, Mike Lotinga University of Salford --_000_AM6PR01MB5750EC8DCB31539210124C8FACF8AAM6PR01MB5750eurp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:o=3D"urn:schemas-microsoft-com:office:office" xmlns:w=3D"urn:sc= hemas-microsoft-com:office:word" xmlns:m=3D"http://schemas.microsoft.com/of= fice/2004/12/omml" xmlns=3D"http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= > <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style><!-- /* Font Definitions */ @xxxxxxxx {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @xxxxxxxx {font-family:Aptos;} @xxxxxxxx {font-family:Consolas; panose-1:2 11 6 9 2 2 4 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0cm; font-size:11.0pt; font-family:"Aptos",sans-serif; mso-ligatures:standardcontextual; mso-fareast-language:EN-US;} a:link, span.MsoHyperlink {mso-style-priority:99; color:#467886; text-decoration:underline;} span.EmailStyle18 {mso-style-type:personal-compose; font-family:"Aptos",sans-serif; color:windowtext;} .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt; mso-ligatures:none;} @xxxxxxxx WordSection1 {size:612.0pt 792.0pt; margin:72.0pt 72.0pt 72.0pt 72.0pt;} div.WordSection1 {page:WordSection1;} --></style> </head> <body lang=3D"EN-GB" link=3D"#467886" vlink=3D"#96607D" style=3D"word-wrap:= break-word"> <div class=3D"WordSection1"> <p class=3D"MsoNormal">Dear list,<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">If you are involved in psychoacoustics, sound qualit= y and perception, you may be interested to learn that there are now availab= le open source software implementations of Sottek’s Hearing Model met= rics for loudness, tonality and roughness, as defined in the ECMA-418-2:2025 standard.<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Some MATLAB implementations were made available last= year, and then earlier this year were incorporated into the SQAT (Sound Qu= ality Analysis Toolbox) library (repo: <a href=3D"https://github.com/ggrecow/SQAT">https://github.com/ggrecow/SQAT= </a>).<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">A corresponding conference paper documenting the ver= ification of these implementations was presented at Forum Acusticum and is = also available open access: <a href=3D"https://www.researchgate.net/publication/392904348">https://www.= researchgate.net/publication/392904348</a><o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">More recently, a python translation was completed (o= pen source repo: <a href=3D"https://github.com/mlotinga/sottek-hearing-model/">https://githu= b.com/mlotinga/sottek-hearing-model/</a>), and the functions are now availa= ble as an installable package via PyPI. These can be installed using:<o:p><= /o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal"><span style=3D"font-family:Consolas">>>> pi= p install sottek-hearing-model<o:p></o:p></span></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">I hope you find these tools useful in your research = and work. The applicable open access licence is <a href=3D"https://www.gnu.org/licenses/gpl-3.0.en.html">GPL3</a>.<o:p></o:= p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">All the best,<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Mike Lotinga<o:p></o:p></p> <p class=3D"MsoNormal">University of Salford<o:p></o:p></p> </div> </body> </html> --_000_AM6PR01MB5750EC8DCB31539210124C8FACF8AAM6PR01MB5750eurp_--