Phitek Systems Limited

Damien Oliver Givernet

Mark Donaldson

William James Sim

Andre Steyn

Pierre Victor Manuel Guiu

An active noise reduction (ANR) component for provision in an earphone housing is disclosed. The device includes a driver and a sensing microphone, the driver and sensing microphone being housed in a component housing. The earphone housing has an outlet passageway from the ANR component to an auditory canal. The ANR component is adapted for use with a controller to provide active noise reduction to the auditory canal over a predetermined range of physical dimensions or acoustic parameters of the housing outlet passageway. The ANR component can thus be used with different housings which simplifies the design process for producing ANR earphone products.

Component for noise reducing earphone

An active noise cancellation earphone () has an acoustic path including a cavity () and a pipe () leading to the auditory canal () which are arranged to form an oscillator in use which has the effect of recovering the open loop system phase characteristics at a selected frequency or frequency range. The earphone () also has two parts () which can be adjusted relative to each other to allow the earphone () to be comfortably and correctly positioned in use.

Growing community of inventors

Auckland, New Zealand

Damien Oliver Givernet