Open AccessVisualization of exhaled breath by transmission electronic speckle pattern interferometry
Author(s) -
Thomas R. Moore
Publication year - 2020
Publication title -
applied optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.668
H-Index - 197
eISSN - 2155-3165
pISSN - 1559-128X
DOI - 10.1364/ao.410784
Subject(s) - optics , speckle pattern , interferometry , speckle imaging , electronic speckle pattern interferometry , interference (communication) , computer science , visualization , speckle noise , transmission (telecommunications) , physics , artificial intelligence , telecommunications , channel (broadcasting)
A method for visualizing the air flow from the mouths of vocalists and wind musical instruments is presented. The method is based on a modification of electronic speckle pattern interferometry that incorporates the interference of a transmitted object beam rather than the standard method using a reflected object beam. The resulting whole-field real-time images are a valuable resource for both scientific and pedagogical use.