Abstract
To evaluate the ability that in tune and out of tune individuals have to identify normal and deviated voice qualities and to compare it with their performance in auditory processing tests and perceptual judgment. The study investigated 15 in tune and 15 out of tune individuals. Participants were matched for age and sex, were amateur choir singers, had normal hearing thresholds and normal vocal quality. All individuals underwent Pitch-matching scanning to be classified as in or out of tune. Next, they performed the Pitch Pattern Sequence (PPS) and the Duration Pattern Sequence (DPS) tests and the perceptual judgment of 36 voices plus 20% of repetition for reliability analysis. The out of tune individuals had worse performance in the PPS and DPS for both ears (p=0.002 RE; p=0.001 LE; p=0.009 DPS); no difference was observed in the perceptual judgment and the reliability (p=0.153). However, participants with normal PPS and DPS had better performance in the perceptual judgment and better reliability (p=0.033). Thus, individuals with disorders in temporal auditory processing skills have greater difficulty in the perceptual judgment and have lower intra-rater reliability, despite being in or out of tune. It can be observed that voice tone is not required to guarantee good perceptual judgment. However, temporal patterns and intra-rater reliability are essential to perceptually assess normal and altered voice qualities. Therefore, auditory training should be included in programs that aim to develop voice perceptual judgment abilities.
Highlights
Vocal tuning is a state of perfect agreement between all the notes produced by the human voice[1]
Based on the vocal tuning screening instrument[12] proposed by Moreti et al, And strengthened by the results presented by the Tonal Reproduction Test[17], the present study considered as tuned choristers those who presented 80% of correct answers, or that is, up to two errors, among the 10 tasks presented
The finding in the present study shows that possibly the greatest intra-subject reliability in the evaluators with normal frequency pattern test (FPT) and duration pattern test (DPT) occurs because they perceive acoustic variations over time more systematically
Summary
Vocal tuning is a state of perfect agreement between all the notes produced by the human voice[1]. Auditory processing consists of a series of processes that occur over time and allow an individual to perform acoustic and metacognitive analysis of sounds, relating the skills involved in decoding, organizing and coding auditory sensory information, leading to the perception and understanding of sound information by the individual[6]. In it is inserted the auditory temporal processing, which concerns the perception of sound or its alteration within a limited time domain. Temporal auditory processing is considered a fundamental skill in the auditory perception of verbal and non-verbal sounds, in the perception of music, rhythm and punctuation, in the discrimination of frequency of duration and phonemes
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