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, music perception, efficient coding, perceptual organization, perceptual learning, sensory neuroscience.

    Graduate Applicants

    Yes, I am accepting applications for graduate research assistants to join the lab starting in the 2024-2025 academic year. Please click here for more information.

    Representative Publications

    Click here for a full list of publications.

    • Shorey, A.E., King, C.J., Theodore, R.M., & Stilp, C.E. (2023). Talker adaptation or “talker” adaptation? Musical instrument variability impedes pitch perception. Attention, Perception & Psychophysics. doi: 10.3758/s13414-023-02722-4
    • Kahloon, L.S., Shorey, A.E., King, C.J.*, & Stilp, C.E. (2023). Clear speech promotes speaking rate normalization. JASA Express Letters, 3(5), 055205. doi: 10.1121/10.0019499
    • Shorey, A.E. & Stilp, C.E. (2023). Short-term, not long-term, average spectra of preceding sentences bias consonant categorization. Journal of the Acoustical Society of America, 153(4), 2426-2435.
    • 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. & 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. (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. & 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)
    • PSYC433 Music Perception and Cognition
    • PSYC531/631 Sensation and Perception (accelerated undergraduate/graduate)
    • PSYC610 Advanced Statistics I
    • PSYC646/AUDI648 Hearing Science