Noise-cancelling headphone

Noise-suppressing receiver

Non-interference zones generated by acoustic wave...

Non-linear reduced-phase filters for active noise control

Off-line feedback path modeling circuitry and method for...

Off-line path modeling circuitry and method for off-line feedbac

Piezoelectric driven flow modulator

Plug, sound inputting and outputting apparatus, and noise...

Process and arrangement of monitoring the effectiveness of a...

Process and device for focusing acoustic waves

Processes and devices for protecting a given volume, preferably

Quiet active fan for servers chassis

Radio communications apparatus with attenuating ear pieces...

Reactive sound absorber

Reduced VLF overload susceptibility active noise cancellation he

Reducing flow-induced resonance in a cavity

Reduction of computational burden of adaptively updating control

Remote multipoint architecture for full-duplex audio

Remote siren headset

Resonator for active noise attenuation system