Reduction of flow-induced microphone noise

Reflection-type speaker apparatus

Regressively hinged spider

Reinforced speaker damper

Releasably mounted compound loudspeakers

Remote controller having echo function

Remote edge-driven panel speaker

Removable bag for mounting of stereo system on two-wheeled vehic

Repairable electromagnetic linear motor for loudspeakers and...

Resonance damper for piezoelectric transducer

Resonance frequency correction method and vibration speaker

Resonant element transducer

Resonant frequency adjustment using tunable damping rods

Resonant panel-form loudspeaker

Resonant tuned, ultrasonic electrostatic emitter

Resonating cone transducer

Retractable 2 way microphone

Retractable speaker assembly for a partition

Reversible speaker grill attachment

Ribbon microphone