• Current funding: NIDCD [National Institutes of Health].
  • Past funding: Deafness Research Foundation; Summer Faculty Fellowship, Indiana University, Bloomington.
  • Research Software: Software for recording and analysis of otoacoustic emissions is developed and maintained by Professor Carrick Talmadge of the University of Mississippi. We develop all other software inhouse. This includes custom software for speech-in-noise testing and threshold tracking. Our algorithm for hearing threshold tracking is motivated by Professor Jonathan Siegel's application of the Revitt (1971) algorithm. These applications are developed on Max/MSP in our laboratory.
  • Web Site: This web site is my laboratory to learn about new technologies and programming languages. My learning about web-technologies is mostly encounter driven; I see something on some site and think, "I wonder how that is done?" That initiates a few days, weeks or months of intense reading and trying. Some of these exercises end up with specific implementations on the website.
  • I am happy to share code for anything you see here. Please contact me at s-dhar at northwestern dot edu.
    • down up stop top

    11.14.09: Deeter et. al. published in Nov issue of JASA.

    10.4.09: Zhao and Dhar ePub available (JARO).

    9.15.09: Dr. Jungmee Lee joins the lab and HARP as research associate.

    9.1.09: Lauren Calandruccio starts faculty position at CUNY.

    9.1.09: Zhao and Dhar paper showing time course of change in SOAE amplitude and frequency upon efferent stimulation in press (JARO).

    8.31.09: Rebekah Abel completes MS in Managerial Communication at Northwestern.

    8.15.09: Deeter et. al. paper documenting DPOAE level and frequency shifts upon efferent stimulation in press (JASA).

    6.10.09: Worthington et. al. paper documenting serious influence of measurement method on estimates of iPod listening levels published in JASA.

    5.8.09: Dhar et. al. paper in collaboration with Kraus lab published in Clinical Neurophysiology.

    5.5.09: Lauren Calandruccio accepts tenure-track position at CUNY, Queens College. Will start on Sept 1, 2009.

    4.15.09: HARP-related talks by Jon and Sumit well received at AudiologyNOW.

    3.25.09: Ryan Deeter secures engineering co-op position at Etymotic Research.

    3.15.09: Four posters well received at American Auditory Society.

    2.25.09: Sumit is this month's guest editor on otoemissions.org

    2.23.09: Wong et. al. out in Neuropsychologia (vol. 47 pg. 693).

    2.3.09: Lauren Calandruccio awarded $10k "Young Investigator Research Grant" by the American Academy of Audiology.

    1.30.09: Sumit finishes term as President of the Illinois Academy of Audiology.

    1.15.09: Klemp and Dhar finally out in paper version of JAAA (vol. 19 pg. 571); featured in editorial by Professor Jim Jerger.

    12.1.08: Lauren Calandruccio is awarded the 2009-2010 Fredrick V. Hunt Fellowship in Acoustics by the Acoustical Society of America.

    11.21.08: Calandruccio et. al. poster and Dhar talk at ASHA, 2008.

    11.15.08: Calandruccio presents poster at APCAM.

    11.7.08: Sumit presents half-day seminar at ADA. Very few fall asleep.

    10.31.08: Hugh Knowles Center renews funding for Lauren Calandruccio.

    8.12.08: Wong et. al. paper on cortical mechanisms of speech perception in noise published in JSHLR.

    8.1.08: NIH/NIDCD will fund collaborative R01 between Dhar lab and Abdala Lab (House Ear Institute).

    6.1.08: Sumit granted tenure and promotion to associate. Lab prepares for retirement.

    3.15.08: Calandruccio winner of $3k Delmar Publishing dissertation scholarship.

    3.10.08: Two talks (Calandruccio, Dhar) and two posters (Abel, Dunckley) well received at American Auditory Society.

    3.1.08: Dunckley wins NIH award for mentored-student poster presentation at American Auditory Society.

    1.24.08: Kate Dunckley wins student presenter award at Illinois Academy of Audiology.

    1.1.08: Lauren Calandruccio, Ph.D. joins lab as Hugh Knowles Postdoctoral Fellow.

    11.27.07: Klemp & Dhar manuscript in press in JAAA.

    10.19.07: Dhar & Abdala paper published in JASA.

    10.1.07: Three talented undergraduate students, Mary Ann Oneyali, Helen Han, and Ryan Deeter, join lab.

    9.29.07: Nick Bennett joins lab as leader of software development efforts.

    7.19.07: Dhar & Abdala paper comparing fine structure in newborns and adults accepted in JASA.

    4.25.07: NIH/NIDCD will fund 5-year R01 for large scale clinical evaluation of OAEs.

    4.19.07: Worthington poster and Dann talk well received at AAA in Denver, CO.

    3.19.07: Kate Dunckley presents poster at AAS.

    3.15.07: Robert Risley graduates

    10.7.06: Ferro et. al. in press at the International Journal of Pediatric Otorhinolaryngology.

    9.28.06: NIH to fund seven year study on hispanic health. Lab responsible for hearing component.

    9.07.06: Dann starts externship with Ohio State University Medical Center.

    9.07.06: Klemp starts externship at Beth Israel in New York.

    8.15.06: Webpage overhaul: AJAX features added.

    7.25.06: Dann and Klemp (Au.D. program) defend Capstone projects.

    7.17.06: Abel and Horey to start "Repeatability" study.

    7.14.06: Shaffer & Dhar published in JAAA.

    7.10.06: Nordrum et. al. published in AJA.

    7.01.06: Robert Risley (Ph.D. program) joins lab.

    6.16.06: Preferred listening levels when using portable music devices - measurements completed.

    6.16.06: Worthington leaves for Pittsburg.