Effects of non-stationary noise on consonant identification

Johannes Zaar, Borys Kowalewski, Torsten Dau

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    Consonant perception has typically been measured using consonant-vowel (CV) syllables presented in a stationary noise masker at various signal-tonoise ratios (SNRs). Recently, a microscopic speech perception model was proposed (Zaar and Dau, 2017) and shown to account well for consonant perception data obtained in stationary noise. However, unlike stationary noise, real-life interfering sounds typically exhibit strong fluctuations. The present study therefore investigated the effects of highly non-stationary noise on consonant perception and assessed the predictive power of the model in such conditions. Normal-hearing listeners were presented with 15 Danish CVs in 5-Hz interrupted noise at SNRs of −20, −10, 0, and 10 dB. Five different CV onset times with respect to the noise bursts were considered, differing in the amount of induced simultaneous and forward masking. As
    expected, the consonant recognition scores were inversely related to the amount of simultaneous masking. However, even with minimum simultaneous masking, a substantial loss of consonant recognition was observed at low SNRs, suggesting a forward masking effect. The model, which employs adaptive processes in the front end, accounted for these
    experimental data to a large extent. The experimental paradigm and the model may be useful for assessing temporal effects of hearing-aid algorithms on consonant perception.
    Original languageEnglish
    Title of host publicationProceedings of the International Symposium on Auditory and Audiological Research
    EditorsS. Santurette, T. Dau, J. C.-Dalsgaard, L. Tranebjærg, T. Andersen, T. Poulsen
    Number of pages8
    PublisherThe Danavox Jubilee Foundation
    Publication date2018
    ISBN (Print)978-87-990013-6-1
    Publication statusPublished - 2018
    EventInternational Symposium on Auditory and Audiological Research - Hotel Nyborg Strand, Nyborg, Denmark
    Duration: 23 Aug 201725 Aug 2017


    ConferenceInternational Symposium on Auditory and Audiological Research
    LocationHotel Nyborg Strand
    Internet address


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