Voice-scrambling-signal creation method and apparatus, and...
Water separator silencer with transition horn splitters
Water-proof sound apparatus
Waveform to sound pattern converter
Wax guard system
Whistle
Whistle strap
Whistle with cushioned mouthpiece
Whistle with finger grip
Whistle with tone changing rotator
Wide band width single layer sound suppressing panel
Window for acoustic wave form and method for making
Woodwind instrument
Zebra mussel (dreissena polymorpha) and other aquatic...
Zig-zag arrangement of helical springs in devices for...