Publication: Research - peer-review › Article in proceedings – Annual report year: 1996
The influence of diffraction on the performance of sound intensity probes has been examined using a boundary element model of an axisymmetric 'two-microphone' probe with the microphones in the usual 'face-to-face' arrangement. On the basis of calculations for a variety of sound field conditions and probe geometries it is concluded that the optimum length of the spacer between the microphones is about one microphone diameter; with this geometry the effect of diffraction and the finite difference error almost counterbalance each other up to about an octave above the frequency that has hitherto been regarded as the upper frequency limit of this configuration. The numerical results have been confirmed by experiments.
|Title of host publication||Fourth International Congress on Sound and Vibration|
|Place of publication||Auburn, AL|
|Publisher||International Scientific Publications|
|Conference||4th International Congress on Sound and Vibration|
|Period||24/06/96 → 27/06/96|
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