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