Sensor coupling in acoustic media using reciprocity

In this paper the coupling of a sensor to an acoustic medium is discussed. Based on the acoustic reciprocity theorem, an expression is derived for the motion of the sensor as a function of the undisturbed motion of the embedd ing medium. What is special here is that the sensor is the scattering objec t. The sensor coupling is affected by two factors: the ratio of the density of the sensor and of the embedding medium (ground), and a frequency-depend ent factor depending on the geometry of the sensor. (C) 1999 Acoustical Soc iety of America. [S0001-4966(99)02204-3].