Based on doctoral dissertation by first author under direction of second author. (Author)

Based on doctoral dissertation of first author under the direction of second author. (Author)

The use of a logarithmic amplifier preceding an oscilloscope's vertical amplifier is described for physics teachers who want to demonstrate the exponential decay nature of some phenomena. (Author/SA)

In studies with 22 normal hearing adults and two hearing impaired children (12-13 years old), speech was presented under different degrees of optical distortion. (CL)

Describes some undergraduate laboratory experiments in acoustics which involve the analysis of speech and musical instrument sounds and the general analysis of the frequency range of complex sounds. (HM)

A bricoleur is a person who lives by recycling old materials. This article describes a bricolage, a junk sound sculpture, constructed mainly of junk metal. Selected readings are included. (KC)

The second part of a three-part series, this article describes sound measurement, effects, and indoor learning activities. Thirty elementary school activities are described with appropriate grade levels specified. (Author/CS)

Some topics included are: the relative merits of a programmable calculator and a microcomputer; the advantages of acquiring a sound-level meter for the laboratory; how to locate a virtual image in a plane mirror; center of gravity of a student; and how to demonstrate interference of light using two cords.

Discusses one of the newest methods used to probe the upper atmosphere using naturally generated infrasound from ocean waves. (GA)

Describes the following: a low-pressure sodium light source; a design of hot cathodes for plasma and electron physics experiments; a demonstration cart for a physics of sound course; Bernoulli force using coffee cups; a spark recording for the linear air track; and a demonstration of the effect of altering the cavity resonance of a violin. (GA)

Describes research and technological development relating to navigation on the oceans via sound, particularly via underwater sound. (SL)

Examines what fourth-grade students learned by using computer-based tools intended to help them understand sound and music. Findings provide critical information for future instruction with the goal of supporting learning about sound and music from such tools. They also indicate the need for more studies examining learning from computer-based…

Argues that statistical analysis of the potential distinctiveness of near-merged contrastive pairs must simultaneously take into account several acoustical dimensions. Discriminant analysis of the speech of five Utah speakers distinguished near-merged contrasts but not homophones, suggesting that discriminant analysis is useful in assessing…

Explains the design and development of curriculum materials that ask students to think about physics from a different view. These group-learning classroom materials specifically aim to bring about improvement of student understanding of sound waves. (Contains 29 references.) (Author/SOE)

Almost 15 percent of children from 6 to 19 years old have some degree of hearing loss in one or both ears. Offers guidelines for screening students' hearing and recommends that interventions begin with classroom acoustics, which affect all children including those with normal hearing. Includes strategies for accommodating hearing-impaired…