Sonar apparatus

Sonar array and assembly

Sonar dome

Sonic wave generation

Sonobuoy casing

Sound absorber

Sound absorbing material, multilayer sound absorbing...

Sound absorbing panel

Sound absorbing panel

Sound absorbing shaped part

Sound absorption method and apparatus

Sound absorption structure

Sound absorptive structural block with sequenced cavities

Sound alarm device, especially alarm bell

Sound altering apparatus

Sound and thermal insulating non-woven synthetic sheet material

Sound anti-muffler for a sound generator

Sound attenuating engine enclosure

Sound attenuating structures

Sound attenuation panel comprising a resistive layer with...