Arrangement for damping sound and a method for manufacturing...

Attenuation of source-generated noise in a seismic...

Audible output sonogram analyzer

Audio fingerprinting system and method

Audio message transfer sheet and manufacturing method...

Audio message transfer sheet and manufacturing method...

Audio signalling device

Audioptical vortex replication transdigitator

Auto-adjusting sound masking system and method

Auto-controlled white noise system

Automatic bell ringer

Automatic music transcription

Automotive sound-proof materials and damping materials therefor

Automotive vehicle tone generator

Axial drive resonant pipe projector

Bag-pipes spittle trap

Ball bell ringer

Barrel stave projector

Barrel stave projector-stave attachment

Bass reflex loudspeaker system