Pressure Radiation

To measure a point-to-point transfer function for pressure radiation, the instrument is taken into an anechoic chamber, and excited with a shaker with white noise as input or with a force-hammer, in which case the force input into the system is close to an impulse. The signal generated from the motion of the instrument is recorded using a microphone a distance away from the instrument. With the acceleration and pressure signals recorded, a transfer function is computed [32].