The new Pulse Reflex acoustic camera from Brüel & Kjær can be used for real-time noise source identification and data recording. It is designed to make it easy to identify and measure non-stationary noise events in areas such as aircraft cabins, cargo bays and passenger vehicles. Brüel & Kjær says the camera can be up and running in 20 seconds.
The acoustic camera gives an instant sound map of the object that it is focused on. Mounted on the handheld microphone array is a tablet that displays the sound map, laid over a real-time video of the target. Color-coded noise contours show the strength of sound, from which the user can determine the sound’s source.
As the acoustic camera displays and analyzes noise in real-time, it can also map moving objects, and users can walk and move around with it. Once they identify an area of interest, they can take a screenshot or video using the built-in optical camera, so they can refer to the measurements later on. Recorded data can be exported for post processing, where transient sounds can be replayed and adjusted for frequency, to help analyze them in detail.