search unit

9.29  search unit. Electroacoustic device used to transmit and/or receive ultrasonic energy. Annotation              The device may incorporate more than one...

acoustic holography

9.27  acoustic holography. Inspection method using the phase interference between sound waves from an object and a reference signal to obtain an image of reflectors in the object under...

image convertor

9.26  image convertor. Device for making acoustic field configurations optically visible.

jet-edge generator

9.25  jet-edge generator. Fluid dynamic transducer, involving vortex formation, in which stabilization is achieved by hydrodynamic feedback between a jet and an edge.