The duration of the phonetic segment /s/ (embedded in words in the frame sentence "Say instead.") was measured from recordings made by three adult male speakers. (Author)

Evaluation of the /a/ and /i/ sounds of 51 adult subjects with various laryngeal disorders indicated that spectrographic noise and curvilinear derivatives of the period standard deviation provided the best predictions of disorder severity. (Author/DB)

Surface electrodes were used to describe the perioral reflexes in seven stutterers and five nonstutterers and electromyographic (EMG) recordings were obtained at electrode sites associated with the orbicularis oris inferior muscle and the depressor labia inferior muscle. A difference was noted in the pattern of reflex response between the two…

Surface electrodes were used to describe the perioral reflexes in seven stutterers and five nonstutterers and electromyographic (EMG) recordings were obtained at electrode sites associated with the orbicularis oris inferior muscle and the depressor labia inferior muscle. A difference was noted in the pattern of reflex response between the two…

Respirometric quotients (RQ), the ratio of oral air volume expended to total volume expended, were obtained from the productions of oral and nasal airflow of 10 speakers with cleft palate, with and without their prosthetic appliances, and 10 normal speakers. Cleft palate speakers without their appliances exhibited the lowest RQ values. (Author/DB)

The speech production performance of 16 hearing-impaired subjects (13-19 years old) was measured using both experienced and inexperienced listeners. Results demonstrate that forced-choice tests can provide speech production measures that are virtually independent of listener experience, can provide analytic detail about production of phonetic…

The study found no significant trends in the change of acoustical durations of stutter- and disfluency-free speech from readings in an adaptation series with four adapting, four nonadapting, and four nonstuttering subjects (all young adults). Findings suggest that adaptation of stuttering and other fluency-inducing conditions are a result of…

This study of 14 school-age children who stuttered found that the average duration of stuttering was approximately three-quarters of a second and was not correlated with age, length of post-onset interval, or frequency of speech disfluency. Stuttering duration may be related to amount of sound prolongations as well as articulatory rate during…

Five men repeated a phrase, beginning at total lung capacity and ending at residual volume. Analysis indicated that voice onset time (VOT) was longer at high lung volumes and shorter at low lung volumes. Lung volume should, therefore, be considered when using VOT as an index of laryngeal behavior in healthy and speech-disordered individuals.…

This study analyzed a conversational speech sample from 10 preschool children stuttering for a year or less and age- and sex-matched nonstuttering children. Analysis indicated no significant between-group differences for either the duration of acoustically measured sound/syllable repetitions and sound prolongations or the number of repeated units…

Cluster formation in speech disfluencies of 15 preschool stuttering children and 15 nonstuttering controls was studied and compared. Clustering was found to be a significant factor in disfluent speech for both normal and stuttering children, but proportions of clustered disfluencies and size of clusters were significantly greater in the…

Twenty adult male nonstutterers became more fluent when pacing their speech with a metronome. The degree to which they became more fluent was within the range which has been reported for stutterers. This finding suggests that the effect of the metronome on stuttering is not primarily a result of distraction. (Author/KW)