[AUDITORY] Ph.D. position in Psychoacoustics, Lyon, France (LAVANDIER Mathieu )

Subject: [AUDITORY] Ph.D. position in Psychoacoustics, Lyon, France From: LAVANDIER Mathieu <000002f7cc5c2340-dmarc-request@xxxxxxxx> Date: Mon, 22 Apr 2024 11:07:54 +0000 --_000_5ee467fddf304352aa13ea71cc178c78entpefr_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dear List, Please find below the announcement for a PhD position that could be availab= le in my lab. Thanks for circulating it among your interested students. cheers, mat ------------------------------------------------------------------------ Ph.D. position in Psychoacoustics, Lyon, France "Individual predictions of speech intelligibility in noisy rooms" Summary In noisy environments, the ability to spatially separate a target voice fro= m competing sources can greatly improve intelligibility. This spatial relea= se from masking is generally reliant on having two normally functioning ear= s - hearing loss and current hearing-aid processing can greatly reduce this= benefit. There is currently no model able to predict the intelligibility o= f speech masked by competing speech, nor the associated effects of hearing = loss and hearing aid processing. Models have only been validated for differ= ent types of noise maskers, partly because in speech-on-speech situations t= he sources of masking can be either "energetic" or "informational". Energet= ic masking (EM) refers to a decrease in intelligibility when the target and= masker signals overlap in time and frequency reducing target audibility. I= nformational masking (IM) refers to more central factors limiting intelligi= bility (e.g., inability to segregate the signals or to attend the target sp= eech), when the maskers are very similar to the target or otherwise highly = distracting. The aim of this PhD is to develop a model able to predict the effects of EM= on individual intelligibility for both normal-hearing (NH) and hearing-imp= aired (HI) listeners in realistic environments. The contribution of IM will= then be quantified as the remaining variations in the data once predicted = EM effects have been factored out. This research will be based on a binaura= l model recently* proposed to predict individual intelligibility difference= s associated with EM among HI listeners for speech intelligibility measured= in noise, modulated noise, and competing speech. Compare to this earlier m= odel, the aim will be to predict full psychometric functions (percent corre= ct as a function of signal-to-noise ratio, SNR) rather than being limited t= o differences in speech reception threshold (SNR for 50% intelligibility). = The model will be tested on data measured for NH and HI listeners in record= ed real-world environments varying in complexity. This PhD is expected to support the development of hearing aids by allowing= a relevant evaluation of their effects on perception in complex, realistic= scenarios. The model will be developed using MatLab (and made available to= the community once validated), and this development could require the desi= gn and analysis of controlled listening tests. This PhD could involve an in= ternational mobility, thanks to the Europen project SAV (Marie Curie Resear= ch and Innovation Staff Exchange, 2023-2027). This project can fund up to a= year of mobility for the PhD candidate in the lab of one of the internatio= nal partners of the project: J=F6rg Buchholz (Macquarie University, Austral= ia) and Virginia Best (Boston University, USA). * Lavandier et al. (2021) "Individual differences in speech intelligibility= at a cocktail party: A modelling perspective" J. Acoust. Soc. Am., 150 (2)= , pp. 1076-1087 Funding: it is not secured yet. Application for funding has to be made with= the selected candidate. Starting date of Ph.D.: October 1st 2024 Deadline for application: May 5th 2024 (send application, CV and the coordi= nates of 2 referees). Contact : Mathieu Lavandier (mathieu.lavandier@xxxxxxxx, +33 (0)4 72 04 70 = 30) Universit=E9 de Lyon, ENTPE, LTDS, Rue M. Audin, 69518 Vaulx-en-Velin Cedex= , FRANCE https://mathieulavandier.wordpress.com/ ---------------------------------------------------------------------------= -------------------- Mathieu Lavandier https://mathieulavandier.wordpress.com/ Universit=E9 de Lyon, Labex CeLyA https://celya.universite-lyon.fr<https://celya.universite-lyon.fr/> ENTPE, Laboratoire de Tribologie et Dynamique des Syst=E8mes (LTDS, UMR 551= 3) Rue M. Audin, 69518 Vaulx-en-Velin Cedex, FRANCE T=E9l : +33 (0)4 72 04 70 30 --_000_5ee467fddf304352aa13ea71cc178c78entpefr_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-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=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang=3D"FR" link=3D"#0563C1" vlink=3D"#954F72"> <div class=3D"WordSection1"> Dear List,<o:p></o:p></p= > <o:p> </o:p> Please find below the announcem= ent for a PhD position that could be available in my lab. Thanks for circul= ating it among your interested students.<o:p></o:p> <o:p> </o:p> cheers,<o:p></o:p> mat<o:p></o:p> <o:p> </o:p> <o:p> </o:p> -------------------------------= -----------------------------------------<o:p></o:p> P= h.D. position in Psychoacoustics, Lyon, France<o:p></o:p> &= #8220;Individual predictions of speech intelligibility in noisy rooms&#8221= ;<o:p></o:p> <sp= an lang=3D"EN-US" style=3D"font-size:12.0pt"><o:p> </o:p> = Summary<o:p></o:p> <sp= an lang=3D"EN-US">In noisy environments, the ability to spatially separate = a target voice from competing sources can greatly improve intelligibility. = This spatial release from masking is generally reliant on having two normally functioning ears — hearing loss and c= urrent hearing-aid processing can greatly reduce this benefit. There is cur= rently no model able to predict the intelligibility of speech masked by com= peting speech, nor the associated effects of hearing loss and hearing aid processing. Models have only been validate= d for different types of noise maskers, partly because in speech-on-speech = situations the sources of masking can be either “energetic” or = “informational”. Energetic masking (EM) refers to a decrease in intelligibility when the target and masker signals overla= p in time and frequency reducing target audibility. Informational masking (= IM) refers to more central factors limiting intelligibility (e.g., inabilit= y to segregate the signals or to attend the target speech), when the maskers are very similar to the target= or otherwise highly distracting.<o:p></o:p></s= pan> <sp= an lang=3D"EN-US">The aim of this PhD is to develop a model able to predict= the effects of EM on individual intelligibility for both normal-hearing (N= H) and hearing-impaired (HI) listeners in realistic environments. The contribution of IM will then be quantified = as the remaining variations in the data once predicted EM effects have been= factored out. This research will be based on a binaural model recently* pr= oposed to predict individual intelligibility differences associated with EM among HI listeners for speech intelligibili= ty measured in noise, modulated noise, and competing speech. Compare to thi= s earlier model, the aim will be to predict full psychometric functions (pe= rcent correct as a function of signal-to-noise ratio, SNR) rather than being limited to differences in speech reception t= hreshold (SNR for 50% intelligibility). The model will be tested on data me= asured for NH and HI listeners in recorded real-world environments varying = in complexity. <o:p></o:p> This PhD is expected to support the development of hearing = aids by allowing a relevant evaluation of their effects on perception in co= mplex, realistic scenarios. The model will be developed using MatLab (and made available to the community once validated= ), and this development could require the design and analysis of controlled= listening tests. This PhD could involve an international mobility, thanks to the Europen project SAV (Marie Curie Research and Innovation Staff Exchange, 2023-2027). This project can fund up to a year = of mobility for the PhD candidate in the lab of one of the international pa= rtners of the project: J=F6rg Buchholz (Macquarie University, Australia) an= d Virginia Best (Boston University, USA).<o:p></o:p> * Lavandier et al. (202= 1) “Individual differences in speech intelligibility at a cocktail= party: A modelling perspective” J. Acoust. Soc. Am., 150 (2), pp. 1076-1087<o:p></o:p> <o:p> </o:p> = Funding: it is not secured yet<= span lang=3D"EN-US">. Application for funding has to be made with the selec= ted candidate. <o:p></o:p> = Starting date of Ph.D.: October 1st 2024<o:= p></o:p> = Deadline for application: May 5th 2024 (send application, CV and the coordin= ates of 2 referees).<o:p></o:p> = Contact : Mathieu Lavandier (mathieu.lavandier@xxxxxxxx, +33 (0)4 72 = 04 70 30)<o:p></o:p><= /p> = Universit=E9 de Lyon, ENTPE, LTDS, Rue M. Audin, 69518 Vaulx-en-Velin Cedex= , FRANCE<o:p></o:p> <a href=3D"https://mathieulavandier.wordpress.com/">= https://mathieulavandier.wordpress.= com/</a><o:p></o:p></= p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> ------------------------------------------------------= -----------------------------------------<o:p></o:p> Mathieu Lavandier<o:p></o:p> <a href=3D"https://mathieulavandier.wordpress.com/"><s= pan style=3D"color:#0563C1">https://mathieulavandier.wordpress.com/<= /a> Universit=E9 de Lyon, Labex CeLyA<o:p></o:p> <a href=3D"https://celya.universite-lyon.fr/">https://celya.universite-lyon.fr</a><o:p></o:p> ENTPE, Laboratoire de Tribologie et Dynamique des Syst= =E8mes (LTDS, UMR 5513)<o:p></o:p> Rue M. Audin, 69518 Vaulx-en-Velin Cedex, FRANCE T=E9l : +33 (0)4 72 04 70 30<o:p></o:p> <o:p> </o:p> </div> </body> </html> --_000_5ee467fddf304352aa13ea71cc178c78entpefr_--

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