The salience of voiced onset time (VOT) as a voicing cue for initial stop-vowel units is examined. VOT duration was altered. Findings did not indicate that changes in VOT duration altered the perception of voicing. Aspiration more than VOT seems to be more important in the detection of voicing. (SC)

This textbook presents scientific knowledge in a question-and-answer format. It is intended for the use of families and schools, explains about 2000 questions that children commonly ask, and is written in language so plain as to be understood by all. Heat, non-metallic elements, metals, organic chemistry, meteorology, optics, and sound are covered.

Paper presented at the International Seminar on Experimental Research in Music Education (University of Reading, Reading, England, July 9-16, 1968).

THE VALUE OF THE ACOUSTIC PARAMETERS OF A PHONETIC EVENT VARY FROM SPEAKER TO SPEAKER AND, TO SOME EXTENT, FROM DAY TO DAY. THE ABSENCE OF STABLE INVARIANTS IN SPEECH PRODUCTION IMPLIES THAT A COMPUTER MUST BE SELF-ADAPTIVE IN ORDER TO RECOGNIZE THE PHONETIC EVENTS OF DIFFERENT SPEECH PRODUCTIONS. SELF-ADAPTATION, HOWEVER, REQUIRES THAT PHONEME…

IN THIS ARTICLE THE NATURE OF THE DISCIPLINE OF SPEECH SCIENCE IS CONSIDERED AND THE VARIOUS BASIC AND APPLIED AREAS OF THE DISCIPLINE ARE DISCUSSED. THE BASIC AREAS ENCOMPASS THE VARIOUS PROCESSES OF THE PHYSIOLOGY OF SPEECH PRODUCTION, THE ACOUSTICAL CHARACTERISTICS OF SPEECH, INCLUDING THE SPEECH WAVE TYPES AND THE INFORMATION-BEARING ACOUSTIC…

THE ACHIEVEMENT OF EXTREMELY LOW AIR-CONDITIONING NOISE LEVELS REQUIRED FOR MODERN AUDITORIUMS ARE THE RESULT OF CAREFUL PLANNING AND THOROUGH DETAILING. PROBLEMS FACED AND TECHNIQUES USED IN ARRIVING AT LEVELS AS LOW AS NC-15 FOR A SINGLE SYSTEM SERVING A HALL ARE DESCRIBED. SIX CASE HISTORIES ARE EXAMINED AND THE FOLLOWING OBSERVATIONS ARE…

An attempt to gather and organize information regarding acoustics in schools, and a planning guide for school architects and administrators, this report can be useful at various stages in school design, particularly analysis, planning and construction. To accomplish these goals two attitudes are necessary -- (1) acoustics must be thought of as…

Physically, noise is a complex sound that has little or no periodicity. However, the essential characteristic of noise is its undesirability. Thus, noise can be defined as any annoying or unwanted sound. In recent years, the rapid increase of noise level in our environment has become a national public health hazard. Noise affects man's state of…

The Vicens-Reddy System is unique in the sense that it approaches the problem of speech recognition as a whole, rather than treating particular aspects of the problems as in previous attempts. For example, where earlier systems treated only segmentation of speech into phoneme groups, or detected phonemes in a given context, the Vicens-Reddy System…

The purpose of this research was to investigate developmental changes in encoding processes. It attempted to determine the extent to which children of varying ages utilize semantic (denotative or connotative) and acoustical encoding categories in a short-term memory task. It appears to be a reasonable assumption that as associational hierarchies…

Investigates the principles underlying the perception of vowel stimuli. The results support Chistovich's claim. When judging the distance between synthetic vowel stimuli, speakers refer to the phonemic structure of their native language. They determine the phonemes closest to the stimuli and then compare the phonemes and not the stimuli…

Reports on a study of voiced onset time in initial voiced stops in various vocalic contexts. (Author/AM)

Describes an undergraduate project of measuring environmental noise. Includes a discussion of current methodologies used in environmental noise assessment and the usefulness of projects which involve the physics profession with local governmental agencies and the community. (SL)

Describes studies of voice onset time in Spanish and an acoustic feature termed presence versus absence of an abrupt consonant onset. It is suggested that this feature may be used by the Spanish listener in making a perceptual distinction between voiced and voiceless stop consonants in multiple environments. (Author/KM)

Provides contributed physics activities and laboratory techniques. (CP)