This laboratory training manual on laser communications and fiber optics may be used in a general technology-communications course for ninth graders. Upon completion of this exercise, students achieve the following goals: match concepts with laser communication system parts; explain advantages of fiber optic cable over conventional copper wire;…

The purpose of this comprehensive bibliography (approximately 200 items) is to facilitate the clinician's role in assessing and planning intervention for speech production of hard-of-hearing and deaf individuals. This set of references is alphabetized by separate categories that include articles, books, chapters in books and monographs. Consulting…

Provides extensive annotated bibliographies on sound, musical instruments, the perception of musical sound and other aspects of musical acoustics. (Author/CP)

A pneumotachographic investigation of intervocalic /p/, /t/ and /k/ was undertaken to isolate physiological parameters responsible for coarticulatory air-flow phenomena. Airflow was most sensitive during the /k/ closure phase. The dynamics of the closure phase for each place of articulation and their implications for pneumotachography are…

Earplugs are sold in most pharmacies. Because I teach at a college of pharmacy, I want my students to understand a particular feature of earplugs called the Noise Reduction Rating, or NRR. The NRR is a rating of the effectiveness of earplugs at decreasing the amount of sound (or noise) entering the ear. Typical values range from 12 dB to 33 dB;…

Still no decisive result has been achieved in the automatic machine recognition of sentences of a natural language. Current research concentrates on developing algorithms for syntactic and semantic analysis. It is obvious that clues from all levels of perception have to be taken into account if a long term solution is ever to be found. (Author/MSE)

A study of fundamental vocal frequency values in 14 children aged 11 to 25 months, an age period characterized by changes in physiological and linguistic development, is reported. A developmental trend downward in vocal frequencies is traced across a number of previous studies, but is only tentative and is not documented in the age group under…

Using 10 kindergarten children with poor articulation of /s/, this study sought to determine whether modification of speech sounds by the use of an electroacoustic filter improved the children's /s/ articulation, as compared to training of /s/ using non-filtered words. Posttest scores, as measured by "A Deep Test of Articulation," showed…

Paper presented at the 1972 International Conference on Speech Communication and Processing, Boston, Mass.; research supported by the National Institutes of Health. (DD)

Provisions for public address in new construction of campus buildings (specifications, installations, and operation of public address systems), are discussed in non-technical terms. Consideration is given to microphones, amplifiers, loudspeakers and the placement and operation of various different combinations. (FS)

A description of the three contrasting Korean affricates as analyzed by means of a Sona-Graph sound spectograph (Model 6061A) is presented. Duration and intensity studies seem to indicate that these affricates are distinguishable by duration and intensity resulting from three different manners of articulation. The research represented in this…

The learning environment is discussed in terms of environmental components or factors that should be considered by the architect. The design factors to be considered and elaborated on are as follows--(1) program, (2) function, (3)light, (4) color, (5) acoustics, (6) temperature, (7) humidity, (8) spatial conformation, (9) structure, (10) site…

This position paper focuses on noise pollution and the problems and solutions associated with this form of pollution. The paper is divided into the following five sections: Noise and the Ear, Noise Measurement, III Effects of Noise, Acoustics and Action, and Programs and Activities. The first section identifies noise and sound, the beginnings of…

Nuffield Secondary Science is a set of tested materials from which teachers can prepare courses for students in grades 9-11 (approximately) who do not intend to major in science. The materials are designed for British secondary schools but are adaptable for other countries. The Teachers' Guide to the entire set of Themes is described in SE 015 440…