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Near Field Acoustic Camera

The Near Field Acoustic Camera allows localisation and real-time analysis of non-stationary noises such as squeaks, rattles and clicks. Unlike traditional techniques, the array of sensors does not only capture sound pressure, but the Near Field Acoustic Camera measures also directly the particle velocity. Hence, the Near Field Acoustic Camera yields an accurate particle velocity map in the full audible frequency range, while maintaining a dynamic range and an unmatched spatial resolution.

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The Microflown Acoustic Camera is a flexible and versatile all-in-one box solution, which allows for real-time localisation and analysis of non-stationary noises such as squeaks, rattles and clicks. All that can be done either by a direct sound field visualisation technique or by employing acoustic holography algorithms for near-field sound reconstruction. Microflown probes enable the direct measurement of particle velocity. Thanks to this unique property, the localisation task can be performed in any measurement environment, and in a broad frequency range (20 Hz -10 kHz). Making the system unique in the capability of accurate sound source localisation for low frequencies.

It is a perfect tool for diagnostics and localisation of non-stationary noise sources from the product development stage till the end of line quality control. The physical properties of particle velocity and the design of the sensors make our systems less susceptible to background noise. Therefore accurate sound intensity and sound power results can be obtained in situations with a high sound pressure over sound intensity ratio (P/I index). This unique feature makes this system a superb engineering tool for troubleshooting, benchmarking, or quality control of all kinds of objects in-situ. In practice, there are many cases where anechoic conditions are not applicable, for instance in an industrial manufacturing environment or a car interior. The Acoustic Camera is a solution which does not require any compromise when taking measurements even in acoustically challenging environments.