3D sound intensity vector

3D sound intensity measurements

Measuring the 3D intensity vector can be useful. In a factory where machinery noises can be a risk of hearing damage it is important to detect the sources of this noise and reduce them. This can be done by measuring the sound intensity around machines and other sound sources such that we can determine which source emits most sound power and has the highest contribution to the noise.

Furthermore, 3D sound intensity measurements are also very useful in locating these sources as it is not always obvious where the sound is coming from.
The Sonocat is a multifunctional spherical microphone able to measure Sound Intensity Levels (SPL) in stationary sound fields.
Applying the theory of sound propagation around a rigid sphere enables the SonoCat to account for the most dominant scattering that impacts the measurements. It is therefore possible to estimate the 3D sound intensity vector and sound pressure level as if the SonoCat was not in the field.