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Long-range detection of acoustic vibrations by speckle tracking
Language
English
Obiettivo Specifico
7TM.Sviluppo e Trasferimento Tecnologico
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
/58 (2019)
Pages (printed)
7805-7809
Issued date
October 1, 2019
Abstract
When a rough surface is illuminated by a laser beam, it scatters the light, producing a random interference pattern also known as speckle pattern. By imaging the speckle pattern with a line-scan CCD, we are able to measure the acoustic vibrations of a scattering surface, which can be up to 300 m distant. We also show that our instrument can be used as a laser microphone capable of detecting ambient sound such as a human voice.
Type
article
File(s)
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Name
_Revised__Long_range_detection_of_acoustic_vibrations_by_speckle_tracking_AO.pdf
Description
Restricted Paper
Size
1.34 MB
Format
Adobe PDF
Checksum (MD5)
7b5782989554db2a16b4f84f19ce6b9b