A lightweight accelerometer has been used to produce a waveform related to the glottal acoustic output when attached to the throat of a speaker, and to provide an indication of acoustic coupling to the nasal cavities when attached to the external surface of the nose. Examples of signals produced by the accelerometer are shown, and possible…

Although standard descriptions of spoken Brazilian Portuguese assign separate allophones to both /1/ and /u/ in utterance-final position after a vowel, it has been observed that in rapid speech native speakers articulate /l/ and /u/ in this position so that they are indistinguishable to the average speaker. To answer questions about the possible…

Six hundred and sixteen CVC stimulus syllables beginning with /l/ and /r/ were presented by tape recording to six Japanese foreign students at Indiana University. Analysis of variance showed the effect of the final consonant variable on the identification of initial /l/ and /r/ was significant at the .05 level; the effect of the CV interaction was…

Several aspects of plastics used in the building industry are discussed, and a general information format for specifying plastics in building construction is given. This format includes--(1) description of product, (2) physical properties, (3) design criteria, (4) installation, (5) maintenance, (6) economics, and (7) case histories. Several uses…

Infant's crying may have an important mediating role in the formation of attachment behavior. The earliest vocalizations are discussed in terms of an acoustic communications model in which the baby's vocal repertoire becomes incorporated into a closed-loop, feedback system with his mother. Certain pre-lingual "signals" may be associated with those…

This curriculum guide is intended for a course to provide high school students with a unified study of the production staff that makes a play possible: theatre management and set design, make-up, lights, and sound staff. The activities suggested in the course may be used as a laboratory and taught in correlation with the actual production of a…

Examination of the role of duration in the perception of phonemic contrast (English /r/-/l/) by Cantonese speakers (N=5) showed that increased duration was not sufficient to facilitate perception; differences in the perception of the two sounds by Japanese and Cantonese speakers were partially explained by differences in the phonological…

A case study is presented in which a language impaired three-year-old used suprasegmental features to distinguish singular and plural forms in spontaneous speech. Acoustic analyses revealed that the suprasegmentals included various duration, fundamental frequency, and intensity parameters. Phonological, morphological, and psycholinguistic factors…

Describes three experiments: (1) "Liquid Flow from Orifices"; (2) "Microcomputer-Controlled Investigation of Battery Discharge and Recovery"; and (3) "Measurement of the Speed of Sound." Drawings and diagrams accompany each. (RT)

The relationship between speech perception and speech production was investigated, by comparing five six and seven-year-old Dutch children who misarticulated the final consonant cluster /-ts/ with three control groups. Results indicate that the poorer the articulation proficiency of a group, the more variability there was in both production and…

The National Aeronautics and Space Administration (NASA) has produced a distance learning series of four 60-minute video programs with an accompanying Web site and companion teacher guide. This teacher guide accompanies the second video in the series. The story line of each program involves six ethnically diverse, inquisitive schoolchildren who…

This annual report presents several articles related to the work of the Clinical Center for Child Development at Hokkaido University in Sapporo, Japan. The articles are: (1) "Joint Attention as a System Property of the Infant-Caregiver Interaction System"(Tsuneda Miho and Shing-Jen Chen); (2) "Age-Related Change in Japanese Maternal…

Waves are disturbances that transfer energy from place to place. All waves have amplitude, wavelength and frequency regardless of whether they are mechanical waves, electromagnetic waves or waves in the ocean! Students will learn more about the role waves play in everyday life and why understanding them is so important. With fun demonstrations and…

Describes apparatus, computer program (for Apple II), and procedures used in an experiment to determine the velocity of sound in air. In addition, the experiment focuses on the attention required in calibrating equipment and the measuring of both long distances and very short time intervals. (JN)

Discusses theory of the rotating mirror, its use in measuring the velocity of the electrical signal in wires, and the velocity of light. Concludes with a description of the manometric flame apparatus developed for analyzing sound waves. (SK)