Near Field Acoustic Camera
Near Field Acoustic Camera is a very fast and accurate system for sound source localization. The sound pressure can be seen as a result of an object making too much noise where the particle velocity is very well suited to localize the cause of why an object is making too much noise. The Near Field Acoustic Camera can be used in real operating conditions and in reverberant conditions, it is no longer needed to have or create anechoic conditions. Unlike traditional techniques the array of sensors is not consisting only of sound pressure microphones but of PU sound intensity probes. The Near Field Acoustic Camera measures the particle velocity directly Since the Camera directly visualizes measurement data in the frequency domain. The results can be visualized as a function of time as the phase information is maintained in this full-array measurement. This means that non-stationary problems such as engine run-ups can be evaluated reliably in an unparalleled frequency range and by looking in the time domain transient noises like squeak & rattles can easily being detected for all frequencies.