Brüel & Kjær Sound & Vibration Measurement A/S

Airbus acquires Brüel & Kjær ramp noise test system

Aerospace giant acquires a large sound and vibration data acquisition system for noise evaluation

June 2013 -- Airbus has acquired a 250-channel Brüel & Kjær PULSE™ data acquisition system for multi-purpose noise and vibration testing.

Airbus’s first use of the system will be for ramp noise compliance testing of its jetliner family of aircraft. Ramp noise testing evaluates and reduces the noise exposure of maintenance personnel and passengers boarding/disembarking the aircraft. The primary noise sources arise from Auxiliary Power Units (APUs), air cycle machines (packs) and brake fans.

Airbus’s new system will support many other activities within the noise and vibration evaluation processes. It is based on Brüel & Kjær’s standard PULSE LAN-XI Data Acquisition Hardware and PULSE Reflex post-processing analysis platform – both commercial-off-the-shelf systems.

PULSE LAN-XI Data Acquisition Hardware is a modular system, which allows individual modules to be freely used as stand-alone front-ends or collected together into frame-based configurations. They can also be distributed throughout - or around - an aircraft and connected together with single LAN cables for synchronised results. More channels can be easily added as necessary - and systems can be divided into smaller ones of any size.

For large aerospace systems, the high number of channels supported, high data sampling frequencies, tight phase matching between channels and the ability to handle wide dynamic range inputs all make PULSE a world-leader. Its self-test and verification tools are dedicated to high channel-count systems and ensure reliable performance, even in the most complex configurations.

The system provides a dedicated, streamlined workflow to handle the system setup, data recording, monitoring, and post-processing analysis of acoustic signals.

Airbus is able to configure its new system for a wide range of applications, enabling the company to capitalise on Brüel & Kjær’s huge range of innovative noise and vibration measurement - and test solutions.


About Airbus

Airbus is a world leading aircraft manufacturer. Headquartered in Toulouse France, Airbus is owned by EADS, a global leader in aerospace, defence and related services.


About Brüel & Kjær

Brüel & Kjær is a world-leading manufacturer and supplier of sound and vibration measurement systems. Brüel & Kjær helps its customers measure and manage the quality of sound and vibration in their products and in the environment. Focus areas are aerospace, space, defence, automotive, ground transportation, airport environment, urban environment, telecom, and audio.

Brüel & Kjær has an unparalleled portfolio of sound and vibration equipment, and is a renowned deliverer of innovative instrumentation, including sound level meters, microphones, accelerometers, conditioning amplifiers, calibrators, noise and vibration analysers and software. To see the full range of products and systems, please visit

Brüel & Kjær also runs a variety of training courses, from basic introductions to noise and its effects to more specialised classes teaching customers how to get the most out of their equipment. Free, online training courses - conducted by our expert engineers - run throughout the year too. For all course registration details visit

Brüel & Kjær is a subsidiary of UK-based Spectris plc ( which has annual sales of £1.1bn and employs around 7,500 people worldwide across its four business segments.

For additional information please contact:
Heather Wilkins
Marketing Coordinator
Bruel & Kjaer
Telephone: 01223 389 800

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