- Country of manufactureDenmark
- Microphone typeCondenser
The spherical directional pattern allows to receive for one simple measurement the full not directed noise map in any acoustic conditions. The algorithm constructed on the basis of spherical harmonicas and the called SHARP (patent application) is for this purpose applied.
Unlike other methods which allow to build only part of a surrounding situation the method of formation of the spherical directional pattern works with a lattice of the spherical shape allowing to measure noise in all directions. Along with it 12 cameras mounted on the sphere carry out photographing of surrounding space.
These images are used as a background received as a result of the card of acoustic noise. Creation of the spherical directional pattern can be applied as in the free acoustic field, and in the field with reverberation since in this case the assumptions concerning the nature of an acoustic situation do not become.
The spherical directional pattern are, as a rule, applied to creation of the survey sound card in the spaces limited and possessing partial absorption, for example, in cabins of cars and planes.
Application: in a vehicle cabin, indoors