TSP #270 - I Can See Sound! FOTRIC TD2 Acoustic Camera Theory, Teardown, Review & Experiments
In this episode Shahriar takes a look at an acoustic camera. These instruments leverage an array of microphones in interesting arrangements to perform acoustic beamforming and localize the source of sound. Furthermore, they combine this information with a visual camera and produce a scene image where sound sources can easily be identified. Given the fairly broad frequency range (2kHz – 65kHz) of the FOTRIC TDS, it can be used in a wide range of applications:
https://www.fotric.com/td2-acoustic-imaging-camera
This review is organized as follows:
00:00 – Introductions & instrument overview
01:21 – Detailed teardown, system & circuit analysis, theory of operation
13:41 – GUI overview, built-in functions, frequency discriminations, surprise lab noise source
19:03 – Controlled frequency & source tests, audible & low-frequency tests, multi-source
26:15 – Detecting leaks, mechanical noise detection
28:24 – PC software post-analysis
29:28 – Concluding remarks
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