A Simple High School Lloyd’s Mirror Experiment: The Difference between Theory and Experiment
The Journal of the Acoustical Society of America
A baffled circular loudspeaker is driven at 10 000 Hz to provide a sound source for a high school level Lloyd’s mirrorexperiment. The experiment was to be performed in an ordinary building hallway. The experiment was also designed to produce interference using reflected sound from a hard floor while avoiding reflected sound from other surfaces. Modeling the sound as a Fresnel volume proved useful, but certain assumptions about the effectiveness of sound absorbing tile and flat foamrubber mats were less so. Substitution of more effective sound absorbing materials gave improved results when reflected sound was to be eliminated or the interference effect annulled. © 2011 Acoustical Society of America
Dean, Cleon, Joshua A. Smith.
"A Simple High School Lloyd’s Mirror Experiment: The Difference between Theory and Experiment."
The Journal of the Acoustical Society of America, 129: 2580.