4 papers
Supersonic and Superluminal Energy and Speed of Information via Temporal Interference in a Dispersionless Environment
John L. Spiesberger, Eugene Terray
Numerical implementation of a theory yields acoustic wave packets whose peak-to-peak speeds, , are supersonic in a dispersionless medium due to temporal interference betwee…
Slowing and stopping the speed of sound
John L. Spiesberger, Ivesavega Djianto, Justin Duong +4
Temporal interference between direct and surface-reflected paths induces large variation in the group speed of an acoustic signal between a source and receiver. This speed goes to…
Locating Objects with Signal Times Amongst Shadows and Black Holes in Two-Dimensional Models
John L. Spiesberger
Calling mammals, ships, and many other objects have been commonly located during the last century with two-dimensional (2D) models from measurements of signal time even when the ob…
Computation of Horizontal Correlation of Sound in Presence of Internal Waves in Deep Water and Long Distances
John L. Spiesberger
Numerical solutions are given for a parabolic approximation of the acoustic wave equation at 200 and 250 Hz in two and three spatial dimensions to determine if azimuthal coupling i…