Method and apparatus for attentuating external origin noise reac

Method and apparatus for performing noise cancelling and headpho

Method and apparatus for reducing repetitive noise entering the

Method and system for ensuring audio safety

Noise limiting circuit for earmuffs

Noise reducing device

Noise reducing receiver device

Noise reduction system

Personal active noise cancellation method and device having inva

Protective hearing devices with multi-band automatic...

Reception volume limiting circuit

Sound baffling device

Sound detecting device

Sound inhibitor for audio transducers

System and method for optimized active controller design in...

System to block unwanted sound waves and alert while sleeping

Variable and shiftable acoustic output signal limiter

Variable gain active noise canceling system with improved residu

Volume regulating and monitoring system