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Cepstral Peak Prominence Values for Clinical Voice Evaluation

American journal of speech-language pathology, 2020-08, Vol.29 (3), p.1596-1607 [Peer Reviewed Journal]

COPYRIGHT 2020 American Speech-Language-Hearing Association ;COPYRIGHT 2020 American Speech-Language-Hearing Association ;Copyright American Speech-Language-Hearing Association Aug 2020 ;Copyright © 2020 The Authors ;ISSN: 1058-0360 ;EISSN: 1558-9110 ;DOI: 10.1044/2020_AJSLP-20-00001 ;PMID: 32658592

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  • Title:
    Cepstral Peak Prominence Values for Clinical Voice Evaluation
  • Author: Murton, Olivia ; Hillman, Robert ; Mehta, Daryush
  • Subjects: Acoustics ; Algorithms ; Auditory perception ; Cepstral analysis ; Dysphonia ; English language ; Experiments ; Guidelines ; Mathematics ; Medical diagnosis ; Patients ; Phonemes ; Ratings & rankings ; Speech ; Speech Impairments ; Voice disorders ; Vowels
  • Is Part Of: American journal of speech-language pathology, 2020-08, Vol.29 (3), p.1596-1607
  • Description: Purpose The goal of this study was to employ frequently used analysis methods and tasks to identify values for cepstral peak prominence (CPP) that can aid clinical voice evaluation. Experiment 1 identified CPP values to distinguish speakers with and without voice disorders. Experiment 2 was an initial attempt to estimate auditory-perceptual ratings of overall dysphonia severity using CPP values. Method CPP was computed using the Analysis of Dysphonia in Speech and Voice (ADSV) program and Praat. Experiment 1 included recordings from 295 patients with medically diagnosed voice disorders and 50 vocally healthy control speakers. Speakers produced sustained /a/ vowels and the English language Rainbow Passage. CPP cutoff values that best distinguished patient and control speakers were identified. Experiment 2 analyzed recordings from 32 English speakers with varying dysphonia severity and provided preliminary validation of the Experiment 1 cutoffs. Speakers sustained the /a/ vowel and read four sentences from the Consensus Auditory-Perceptual Evaluation of Voice protocol. Trained listeners provided auditory-perceptual ratings of overall dysphonia for the recordings, which were estimated using CPP values in a linear regression model whose performance was evaluated using the coefficient of determination ( ). Results Experiment 1 identified CPP cutoff values of 11.46 dB (ADSV) and 14.45 dB (Praat) for the sustained /a/ vowels and 6.11 dB (ADSV) and 9.33 dB (Praat) for the Rainbow Passage. CPP values below those thresholds indicated the presence of a voice disorder with up to 94.5% accuracy. In Experiment 2, CPP values estimated ratings of overall dysphonia with values up to .74. Conclusions The CPP cutoff values identified in Experiment 1 provide normative reference points for clinical voice evaluation based on sustained /a/ vowels and the Rainbow Passage. Experiment 2 provides an initial predictive framework that can be used to relate CPP values to the auditory perception of overall dysphonia severity based on sustained /a/ vowels and Consensus Auditory-Perceptual Evaluation of Voice sentences.
  • Publisher: United States: American Speech-Language-Hearing Association
  • Language: English
  • Identifier: ISSN: 1058-0360
    EISSN: 1558-9110
    DOI: 10.1044/2020_AJSLP-20-00001
    PMID: 32658592
  • Source: ProQuest One Psychology
    Alma/SFX Local Collection
    ProQuest Central
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