Interaction between lexical acquisition and acquisition of initial voiceless stops (VSs) was studied in two normally developing children by acoustically examining token-by-token accuracy of initial VS targets in different lexical items. Tokens representing the emergence of accurate VS production were restricted to certain words, largely old words…

The paper describes the unexpected finding of evoked otoacoustic emissions from one ear of a subject with severe-to-profound bilateral sensorineural hearing loss. It is suggested that the subject may have a group of surviving outer hair cells in some regions of the left cochlea with corresponding inner hair cell or neural damage. (Author/DB)

Variations in the aversiveness of a newborn's distress cry were examined by means of manipulation of features of fundamental frequency, intonation, and spectral complexity, and of information given to subjects about the infant's health status. Findings suggest that the listener's reaction to cry characteristics can be altered by the inducement of…

Acoustic phonatory events were identified in 14 women diagnosed with adductor spasmodic dysphonia (ADSD), a focal laryngeal dystonia that disturbs phonatory function, and compared with those of 14 age-matched women with no vocal dysfunction. Findings indicated ADSD subjects produced more aberrant acoustic events than controls during tasks of…

Defines the vibrations of a tuning fork against a computer monitor screen as a pattern that can illustrate or explain physical concepts like wave vibrations, wave forms, and phase differences. Presents background information and demonstrates the experiment. (Author/YDS)

To increase the signal-to-noise ratio in a kindergarten classroom, the application of soundfield amplification was experimentally controlled and observations of appropriate and inappropriate student behavior recorded before, during, and after soundfield treatment. An increase in appropriate behavior was found when the soundfield application was on…

This study evaluated speech intelligibility under noise conditions of varying peaks (10, 20, and 30 decibels) in frequency response, with 26 listeners with sensorineural impaired hearing who used hearing aids and 10 listeners with normal hearing. Results indicated that the peaks affected speech intelligibility more for listeners with impaired than…

Reports results of an instrumental acoustic examination of the vowel systems of ten Jamaican Creole (or Basilect-) dominant and nine Jamaican English (or Acrolect-) dominant speakers, and links phonetic features with sociolinguistic factors. Nature and relative role of vowel quantity and quality differences in phonemic contrast are considered.…

Explains a physics experiment on the dynamics of impact cratering. Measures the spreading velocity of the impact wave and the acoustic signal. (YDS)

What is music? What should be taught when music is taught? How should it be taught? In the early twentieth century, these most foundational questions relating to music education were addressed by the highly regarded, though less well known, educator and researcher, Otto Rudolph Ortmann. In 1922, he published an article in which he outlined a…

The functional link between the amygdala and hippocampus in humans has not been well documented. We examined the effect of unpleasant loud noise on hippocampal and amygdaloid activities during picture encoding by means of fMRI, and on the correct response in humans. The noise reduced activity in the hippocampus during picture encoding, decreased…

This work investigated whether stuttering and nonstuttering adults differ in the coordination of oral and laryngeal movements during the production of perceptually fluent speech. This question was addressed by completing correlation analyses that extended previous acoustic studies by others as well as inferential analyses based on the…

This article explores methodological issues in sonification and sound design arising from the design of helicopter monitoring sounds. Six monitoring sounds (each with 5 levels) were tested for similarity and meaning with 3 different techniques: hierarchical cluster analysis, linkage analysis, and multidimensional scaling. In Experiment 1,…

This study investigated multisensory interactions in the perception of auditory and visual motion. When auditory and visual apparent motion streams are presented concurrently in opposite directions, participants often fail to discriminate the direction of motion of the auditory stream, whereas perception of the visual stream is unaffected by the…

In order to enable students who are blind and visually impaired to observe chemical changes in solutions, a hand-held device was designed to output light intensity as an audible tone. The submersible audible light sensor (SALS) creates an audio signal by which one can observe reactions in a solution in real time, using standard laboratory…