Setup, testing, and processing for results is very fast and simple
Quick trial and error tests
Ideal for isolated sources in space or isolated signals in time
No limit on size and aspect ratio of an object
Best tool for identifying high frequency airborne sounds (above 800Hz, above 400Hz for large arrays) |
Spatial resolution no better than one wavelength
Only displays pressure at the surface of the array
Difficult to correlate with modeling tools
Cannot visualize structure modes
Dynamic range is limited to 8 to 14dB (dependent on array) in displaying results |
Reconstructs the complete acoustic field on the source surface: pressure, velocity, intensity and sound power
Provides high spatial resolution even for lower frequencies, and high dynamic range
Best method to identify Structure-borne sounds regardless of the frequency of interest
Allows for Panel Contribution analysis
Allows correlation with other analytical modeling tools (such as SEA, FEA etc) |
Requires conformal measurement
Requires coordinates for microphones and object surface
Limited to 4 to 1 aspect ratio and nothing smaller than 150 cm2
Sensitive to high surface temperature due to working temperature range of microphones
Sensitive to high air flows around the array microphones |