Acoustic lens
Acoustic lens
Acoustic lens apparatus
Acoustic lens for use in acoustic microscope
Acoustic lens system
Acoustic lens system
Acoustic lens system
Acoustic refractors
Anti-reflective acoustic wavefront refraction element
Ellipticized acoustical lens providing balanced astigmatism
Ellipticized acoustical liquid filled lens providing balanced as
Ellipticized rubber acoustical lens providing balanced astigmati
Internal lens system for loudspeaker waveguides
Lens system for acoustic transducer array
Noise reducing apparatus
Refractive stigmatic system for elastic surface waves
Sound focus speaker of gas-filled sound lens attachment type
Sound wave control device
Video equipment speaker device with acoustic lens