We reexamine the approximate formula for the path difference in the double-slit interference experiment, establish its limits of applicability from a geometric perspective and discuss its validity for the two-source interference of acoustic and surface waves.

Purpose: Teachers spend a significant amount of time in classrooms, which can be noisy environments. The aim of this scoping review was to determine what is known from the literature about the effect of classroom acoustic conditions on teachers' health and well-being. Method: This scoping review followed the PRISMA-ScR (Preferred Reporting Items…

"Marinyo" is a culture left by the Portuguese around the 15th century in Maluku. The purpose of this study was to find out to what extent students' misconceptions about the concept of sound in the "Marinyo" case in the Kepuluan Tanimbar Regency. The method used was a qualitative study in ethnography in ten villages in two…

The sounds of birds form the outdoor playlist of our lives. Birds appeal to the public, in part because of the wide variety of interesting sounds they make. This popularity has led to a long history of amateur participation in ornithology, which has recently produced rapid increases in freely available online databases with hundreds of thousands…

Purpose: The purpose of this study was to evaluate the ability to discriminate yes/no questions from statements in three groups of children--bilateral cochlear implant (CI) users, nontraditional CI users with aidable hearing preoperatively in the ear to be implanted, and controls with normal hearing. Half of the nontraditional CI users had…

An important aspect of a constructed language (conlang) is how it sounds when spoken. This dissertation designs and implements a tool to allow the user to hear how their conlang sounds when spoken. This tool will generate spoken language based on sample text in the constructed language. Further, it will enable the user to manipulate the phonetics…

We propose a method to measure the speed of sound in air using a motion detector. The experiment is based on the principle of a motion detector used to measure distances. This device measures the time of flight of alternating ultrasonic waves between the observer and the target. By assuming a fixed speed of sound, the time of flight can be…

This article proceeds from a consideration of what John Baldacchino calls 'viable ignorance', attempting to take leave from the critical and pedagogical obligations of certain elements of Barbara Johnson's 'positive ignorance'. It considers Friedrich Nietzsche, Jean-François Lyotard and the composer, Karlheinz Stockhausen's reflections on modes of…

This work presents an analysis of the didactic literature for the initial learning of intonation on violin and viola. Analysis has been conducted through a document-analysis design of 86 methods. The chosen analytic categories were: (1) contents (number of pitches and sequence of pitches presentation); (2) pedagogy (teaching approach and use of…

The discipline of film studies often engages in analyses of the functions of filmmakers' decisions in terms of their effects on viewers. Behavior analysis uses a similar, functional-analytic approach toward understanding the relationship between individuals' behavior and the environmental effects that maintain their behavior. Given converging…

Background/Objectives: The objectives of this study were to explore (a) the influence of different types of background noise and their informational content on the ability of speakers to initiate and maintain clear speech (CS), a widely utilized technique for enhancing speech intelligibility, and (b) the impact of background noise and CS usage on…

The very idea of 'critical language studies' encourages one to develop a sense of criticality; that is, to interrogate the concepts that one uses, to explore the boundaries of one's professional practice, and to push one's thinking, if necessary, into new directions. This is typically done with the aim of contributing to epistemic as well as…

Purpose: This registered report aimed to replicate previous findings showing that years of music training predicts speech-perception-in-noise (SPIN) skills in children. In addition, it aimed to investigate whether the musician SPIN advantage is influenced by cognitive factors such as general intelligence or working memory. Method: Following…

Purpose: Here, we examine the possibility that memory consolidation during a period of postpractice rest or nocturnal sleep can bolster speech motor learning in the absence of additional practice or effort. Method: Using web-administered experiments, 74 typical, American English talkers trained in a nonnative vowel contrast then had a 12-hr delay…

Purpose: Talkers adapt their speech according to the demands of their listeners and the communicative context, enhancing the properties of the signal (pitch, intensity) and/or properties of the code (enhancement of phonemic contrasts). This study asked how mothers adapt their child-directed speech (CDS) in ways that might serve the immediate goals…