Acoustic waveguide and electroacoustic system comprising...

Acoustic waveguide plate

Acoustic waveguides with reduced trailing echoes

Acoustic window and material therefor

Acoustical barrier

Acoustical blanket

Acoustical communications headset

Acoustical dampening system

Acoustical energy attenuation apparatus

Acoustical filter for suppressing or attenuating the...

Acoustical impedance matching device for a high impedance...

Acoustical insulating web

Acoustical laminate construction and attenuated systems...

Acoustical louver for earthmoving vehicles and method of...

Acoustical panel

Acoustical sound producer for clocks, especially for...

Acoustical support panel

Acoustical tone generator

Acoustically resistive multi-component layer for a sound...

Acoustically transparent hydrodynamic towed body for...