DSEI 2017

Cutting through the noise [DSEI17D4]

15 September 2017

Esterline (Stand S3-320) is demonstrating its latest Racal Acoustics RA4000 Magna digital headset. Developed by the company’s Harrow-based Control and Communication Systems business over the past 12 months, the new headset addresses operator requirements for hearing protection in high-noise environments up to 120dB.

‘‘We have specifically developed the RA4000 headset for high-noise environments such as those encountered in tanks and tracked vehicles,’’ said Dick Heinrich, managing director of Esterline Control and Communication Systems. ‘‘It is addressing a segment of the market that has traditionally relied upon older analogue technologies.

‘‘What is new about Magna is that it is a digital system, so the majority of functionality can be tweaked or tuned through software,’’ he added.

‘‘This means we can change the response of the headset to match different acoustic environments.’’

The RA4000 Magna headset provides comprehensive hearing protection for high-noise environments with an autonomous, battery-powered digital active noise reduction system. This improves attenuation performance at low frequencies, providing better protection even when untethered from a communication system.

Electronic compression circuitry presents local environment sounds to the wearer at safe levels, so they are more aware of hazards and risks and can have face-to-face conversations without defeating the hearing protection. Output is electronically compressed so that it does not exceed an 85dB(A) safety level.d

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