Christian Stilp, PhD

Christian Stilp, Ph.D., is an Associate Professor in the Department of Psychological and Brain Sciences at the University of Louisville. Dr. Stilp's research areas include speech perception, auditory perception, perceptual organization, perceptual learning, efficient coding, and natural signal statistics.

Associate Professor

Prof. Stilp

Life Sciences Building, 308

(502) 852-0820

christian DOT stilp AT louisville DOT edu




Life Sciences Building, 301-i

(502) 852-6950

Auditory Perception and Processing Lab


Ph.D., 2011, University of Wisconsin

    Research Interests

    Auditory perception, speech perception, efficient coding, perceptual organization, perceptual learning, sensory neuroscience.

    Graduate Applicants

    No, I am not accepting applications for graduate research assistants to join the lab starting in the 2022-2023 year. 

    Representative Publications

    Click here for a full list of publications.

    • Stilp, C.E. & Assgari, A.A. (2021). Contributions of natural signal statistics to spectral context effects in consonant categorization. Attention, Perception, & Psychophysics, 83, 2694-2708. doi: 10.3758/s13414-021-02310-4
    • Stilp, C.E. (2020). Evaluating peripheral versus central contributions to spectral context effects in speech perception. Hearing Research, 392, 107983. doi: 10.1016/j.heares.2020.107983
    • Stilp, C.E. (2020). Acoustic context effects in speech perception. WIREs Cognitive Science; e1517.
    • Stilp, C.E. & Theodore, R.M. (2020). Talker normalization is mediated by structured indexical information. Attention, Perception, & Psychophysics, 82, 2237-2243. doi: 10.3758/s13414-020-01971-x
    • Stilp, C.E. (2019). Auditory enhancement and spectral contrast effects in speech perception. Journal of the Acoustical Society of America, 146(2), 1503-1517. doi: 10.1121/1.5120181
    • Stilp, C.E., & Assgari, A.A. (2019). Natural signal statistics shift speech sound categorization. Attention, Perception, & Psychophysics, 81(6), 2037-2052.
    • Assgari, A.A., Theodore, R.M., & Stilp, C.E. (2019). Variability in talkers’ fundamental frequencies shapes context effects in speech perception. Journal of the Acoustical Society of America, 145(3), 1443-1454. doi: 10.3758/s13414-018-01659-3
    • Stilp, C.E., & Assgari, A.A. (2018). Perceptual sensitivity to spectral properties in earlier sounds during speech categorization. Attention, Perception, & Psychophysics, 80(5), 1300-1310. doi: 10.3758/s13414-018-1488-9
    • Stilp, C.E. (2017). Acoustic context alters vowel categorization in perception of noise-vocoded speech. Journal of the Association for Research in Otolaryngology, 18(3), 465-481. doi: 10.1007/s10162-017-0615-y
    • Stilp, C.E., & Assgari, A.A. (2017). Consonant categorization exhibits a graded influence of surrounding spectral context. Journal of the Acoustical Society of America, 141(2), EL153-EL158. doi: 10.1121/1.4974769
    • Stilp, C.E., Anderson, P.W., Assgari, A.A., Ellis, G.M., & Zahorik, P. (2016). Speech perception adjusts to reliable spectrotemporal properties in the listening environment. Hearing Research, 341, 168-178. doi: 10.1016/j.heares.2016.08.004
    • Stilp, C.E., & Kluender, K.R. (2016). Stimulus statistics change sounds from near-indiscriminable to hyperdiscriminable. PLoS One 11(8): e0161001. doi: 10.1371/journal.pone.0161001
    • Assgari, A.A., & Stilp, C.E. (2015). Talker information influences spectral contrast effects in speech categorization. Journal of the Acoustical Society of America, 138(5), 3023-3032. doi: 10.1121/1.4934559
    • Stilp, C.E., Anderson, P.W., & Winn, M.B. (2015). Predicting spectral contrast effects following reliable spectral properties in speech perception. Journal of the Acoustical Society of America, 137(6), 3466-3476. doi: 10.1121/1.4921600
    • Stilp, C.E., & Anderson, P.W. (2014). Modest, reliable spectral peaks in preceding sounds influence vowel perception. Journal of the Acoustical Society of America, 136(5), EL383-EL389. doi: 10.1121/1.4898741
    • Stilp, C.E. & Kluender, K.R. (2012). Efficient coding and statistically optimal weighting of covariance among acoustic attributes in novel sounds. PLoS One 7(1):e30845. doi: 10.1371/journal.pone.0030845
    • Stilp, C.E., Rogers, T.T., & Kluender, K.R. (2010). Rapid efficient coding of correlated complex acoustic properties. Proceedings of the National Academy of Science, 107(50), 21914-21919. doi: 10.1073/pnas.1009020107
    • Stilp, C.E., & Kluender, K.R. (2010). Cochlea-scaled spectral entropy, not consonants, vowels, or time, best predicts speech intelligibility. Proceedings of the National Academy of Science, 107(27), 12387-12392. doi: 10.1073/pnas.0913625107

    Courses Often Taught

    • PSYC301 Quantitative Methods in Psychology
    • PSYC331 Sensation and Perception (undergraduate)
    • PSYC631 Sensation and Perception (graduate)
    • PSYC646/AUDI648 Hearing Science