Acoustic camera
Acoustic Cameras (TG 23/2023) by Rebecca Hogg, published by BSRIA in 2023, states:
"An acoustic camera incorporates an array of microphones, as shown in the diagram above. It builds up an image by processing the information received at each of the microphones in the array, which all receive sound waves from the same source at slightly different times…. The image produced uses colours to represent sound pressure levels. Typically, bright colours such as yellow are used to represent areas producing the most intense sound whereas darker colours such as purple are used to represent areas producing the least intense sound."
--BSRIA
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