Parametric transducers where sound is generated or captured by the acoustic demodulation of amplitude modulated ultrasonic waves

Full Title

Details of magnetostrictive, piezoelectric, or electrostrictive transducers covered by H04R15/00 or H04R17/00 but not provided for in any of their subgroups > Parametric transducers where sound is generated or captured by the acoustic demodulation of amplitude modulated ultrasonic waves