Purpose: This study was designed to determine whether within-speaker fluctuations in speech intelligibility occurred among speakers with dysarthria who produced a reading passage, and, if they did, whether selected linguistic and acoustic variables predicted the variations in speech intelligibility. Method: Participants with dysarthria included a…

This investigation is a comprehensive acoustic study of 4 voiceless fricatives (/f [theta] s [esh]/) in English produced by adults and pre-and postpubescent children aged 6-14 years. Vowel duration, amplitude, and several different spectral measures (including spectral tilt and spectral moments) were examined. Of specific interest was the pattern…

Adult Spanish second language (L2) learners of English and native speakers of English participated in an English perception task designed to investigate their ability to use L2 acoustic-phonetic cues, e.g., aspiration, to segment the stream of speech into words. Subjects listened to a phrase and indicated whether they heard, e.g., "keep sparking…

Background: Noise-induced hearing loss is a major cause of deafness and hearing impairment in the United States. Though genetics and advanced age are major risk factors, temporary and permanent hearing impairments are becoming more common among young adults and children especially with the increased exposure to portable music players. Though…

The role of hearing, although invisible, is critical to the development of language and literacy skills across key stage 1. Yet, Foundation stage and key stage 1 pupils are the most likely of all children to experience reduced hearing sensitivity, under developed listening skills and a less than ideal acoustic learning environment. The paper…

Sounds are the result of one or several interactions between one or several objects at a certain place and in a certain environment; the attributes of every interaction influence the generated sound. The following factors influence users in human/computer interaction: the organization of the learning environment, the content of the learning tasks,…

This examination of audio card systems for computers begins by identifying the three information processing systems for sound: sound digitizing, synthesis of text, and word recognition. Specific pedagogical applications of digitized sound are then briefly discussed. The remainder of the document focuses on specifications for the working of vocal…

Presented are descriptions (with photographs) of demonstration equipment purchased, assembled, developed, and used at William Jewell College (Missouri) during the past 25 years. The descriptions are organized into the following topic areas: (1) mechanics; (2) heat; (3) waves, sound, and acoustics; (4) electricity; (5) optics; and (6) atomic and…

This paper explains the principles involved in tape editing and recording for foreign language teaching and in the assessment of the quality of the finished product. Three major points involved in tape making are discussed: (1) compilation of a listening text (requires familiarity with foreign language learning and teaching, as well as an…

This module, one of 25 on vocational education training for careers in environmental health occupations, contains self-instructional materials on operating sound-measuring equipment. Following guidelines for students and instructors and an introduction that explains what the student will learn are three lessons: (1) selecting decibel ranges,…

This book contains 65 physics experiments. The experiments are for a college-level physics course for music and art majors. The initial experiments are devoted to the general concept of vibration and cover vibrating strings, air columns, reflection, and interference. Later experiments explore light, color perception, cameras, mirrors and symmetry,…

A NEED TO DETERMINE THE VALUE OF PRELIMINARY DISCRIMINATION TRAINING IN INCREASING THE EFFECTIVENESS OF LANGUAGE LABORATORY PRACTICE ON THE PRONUNCIATION OF FRENCH SOUNDS HAS RESULTED IN THIS STUDY. DESCRIBED IN CHAPTER 2 ARE ELEVEN PILOT STUDIES, INVOLVING MORE THAN 1,000 STUDENTS, THAT PERMITTED THE DEVELOPMENT OF MATERIALS, TRAINING PROCEDURES,…

Research reports on the nature of speech, instrumentation for the investigation of speech, and practical applications of research are included in this status report for the July 1-December 31, 1980, period. The 19 reports deal with the following topics: (1) the structuring of language; (2) whether movements are prepared in parts; (3)…

A general undergraduate education course in descriptive acoustics for students in music, speech, and environmental disciplines is described. Student background, course philosophy, and course format are presented. Resource materials, which include books, a study guide, films, audio tapes, demonstrations, walk-in laboratories, and an examination…

This article describes phonological and semantic characteristics associated with the surface structure of some Japanese sentence intonations. The aim of the long-term study is to show the place of intonation in the total system of Japanese grammar. This particular part of the study is limited to the group of intonations which are characterized by…