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Frequency-based analyses of continuous speech samples demonstrated excellent reliability (ICC > 0.75) for all but 1 variable, which demonstrated good reliability (cepstral-spectral index of dysphonia of the all voiced sample ICC = 0.72).Ĭonclusions and Relevance Sustained vowel utterance and continuous speech samples provide consistent measures of fundamental frequency. Fundamental frequency of continuous speech sample had excellent reliability (ICC > 0.94). Time-based analyses of perturbation in sustained vowel utterances demonstrated poor reliability (ICC  0.40). Results Fundamental frequency of sustained vowel utterances had excellent reliability (ICC ≥ 0.94). Main Outcome and Measure Intraclass correlation coefficients (ICCs) were calculated to assess reliability between speech samples. Intervention or Exposure Sustained vowel utterances and continuous speech samples, which included 4 Consensus Auditory-Perceptual Evaluation of Voice (CAPE-V) sentences and the first sentence of the “rainbow passage” (“A rainbow is a division of white light into many beautiful colors that takes the shape of a long round arch, with its path high above and its 2 ends apparently beyond the horizon”) were obtained at 2 time points

Participants Forty-three children, ages 4 to 17 years. Setting Pediatric otolaryngology practice within a tertiary hospital. Objectives (1) To evaluate normal pediatric voice frequency and perturbation using both time-based and frequency-based acoustic measurements, and (2) to determine if continuous speech samples facilitate increased recording stability. Furthermore, consistency of these measurements across time, particularly for continuous speech, has not been evaluated. Importance Few studies have evaluated the pediatric voice objectively using acoustic measurements.