Visualization of traveling acoustic fields.
The visualization of traveling acoustic waves is achieved by means of acoustic stroboscopy. The limitations of the technique, interpretation of results, frequency range, and optical noise are reviewed. Two methods of noise reduction are studied: spatial filtering and holography. Optical holography of acoustic fields is also shown to offer the best advantages among the various methods of visualization outlined here.
J
J
Lapierre
D
D
Phalippou
S
S
Lowenthal