A re-analysis of f0 in ethnic varieties of London English using REAPER

Anita Szakay, Eivind Torgersen

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review


    Previous research has investigated voice quality in London English using acoustic measurements such as harmonic structure (H1-H2) and fundamental frequency (f0) in Praat [1], and found significant interactions with regard to voice quality and pitch across two ethnic groups [11]. However, Praat’s pitch tracker has been shown to be less than optimal when dealing with low fundamental frequencies. In this study we re-analyse the speech of the same 42 participants from [11] using REAPER: Robust Epoch And Pitch EstimatoR [12]. The REAPER speech processing system defines the local f0 as the inverse of the time between successive glottal closure instants, and has been demonstrated to return effective f0 measurements at low pitch ranges [4,6]. Our results differ somewhat from previously reported values by [11] and we suggest that this is due to REAPER’s more accurate f0 measurements within the creaky voice range [6].
    Original languageEnglish
    Title of host publicationProceedings of the 19th International Congress of Phonetic Sciences
    Subtitle of host publicationICPhS2019
    EditorsSasha Calhoun, Paola Escudero, Marija Tabain, Paul Warren
    Place of PublicationCanberra
    PublisherAustralasian Speech Science and Technology Association (ASSTA)
    Number of pages4
    ISBN (Electronic)9780646800691
    Publication statusPublished - 2019
    EventInternational Congress of Phonetic Sciences (19th : 2019) - Melbourne, Australia
    Duration: 5 Aug 20199 Aug 2019


    ConferenceInternational Congress of Phonetic Sciences (19th : 2019)
    Abbreviated titleICPhS2019


    • creaky voice
    • REAPER
    • Multicultural London English
    • fundamental frequency


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