The literature on esophageal speech has identified the problem of extraneous air intake noise, suggested its possible etiology, and provided practical advice for clinical management. Documentation on the efficacy of specific methodology is lacking in the literature. Such documentation'would be simplified if objective criteria were used to 2 rate the severity of intake noise. The present study was prompted by the lack of basic data regarding listener evaluation of intake noise.The purpose of this study was to identify physical and perceptual correlates of acceptability of esophageal air intake noise. A primary and a secondary question were asked: Twenty-four laryngectomees, ranging widely in esophageal speaking ability, read a standard passage for audio tape recording. Four expert voice clinicians listened to the tapes, rating subjects on the acceptability of air intake noise. Overall esophageal speech proficiency ratings 3 for eighteen of the subjects were obtained from an independent study conducted during the same week.Five objective measures of esophageal speech were extracted from each speech sample, using a real-time intensity display instrument and a storage oscilloscope.Interjudge and intrajudge reliability were determined by computing Pearson product-moment correlation coeff icients. The means of the ratings on intake noise acceptability were entered in a multiple regression analysis as the criterion variable, with the objective measurements and the overall speech proficiency ratings as the predictor variables.Three of the predictor variables were found to be positively correlated with the air intake acceptability ratings beyond the .01 level of significance: the number of syllables uttered per air intake, the mean intensity of intake, and the rate of speech. The ratio of mean speech intensity to mean intake noise intensity was correlated to intake noise acceptability at the .OS level. Neither mean speech intensity nor the overall esophageal speech proficiency variables were significantly correlated with intake noise acceptability. The number of syllables uttered per intake accounted for the largest share of the variance of intake noise acceptability. Mean intake intensity was the second, but far weaker predictor of variance. The remaining variables accounted for a very slight percentage of the total variance.
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