Effective horizontal sound speeds

Detection of Sound Image Movement During Horizontal Head Rotation

Movement detection for a virtual sound source was measured during the listener's horizontal head rotation. Listeners were instructed to do head rotation at a given speed. A trial consisted of two intervals. During an interval, a virtual sound source was presented 60° to the right or left of the listener, who was instructed to rotate the head to face the sound image position. Then in one of a pa...

Processing of Horizontal Sound Localization Cues in Newborn Infants.

OBJECTIVES By measuring event-related brain potentials (ERPs), the authors tested the sensitivity of the newborn auditory cortex to sound lateralization and to the most common cues of horizontal sound localization. DESIGN Sixty-eight healthy full-term newborn infants were presented with auditory oddball sequences composed of frequent and rare noise segments in four experimental conditions. Th...

Horizontal Sound Field Reproduction with Point Sources using Distributed Constraints

A preliminary investigation is presented of horizontal sound field control using a rectangular array of spherical wave driving sources, with focus on wide area plane wave reproduction. Comparison is made between Wave Field Synthesis and a method based on distributed pressure and velocity constraints. Advantages of the second approach are discussed, and modifications of the both methods are prop...

Welfare through sound and effective competition

Sound Foundations for Effective Proofs of Programs

When considering the correctness of programs, the only absolute demonstration of quality is mathematical proof. Yet the complexity of these proofs makes them all but impossible both to construct and read, and the correctness of the proofs themselves come into question. We take an approach to the creation of these proofs based on specifying an axiomatic semantics for the programming language, an...