INTA Expands Aero Acoustics Lab with an Array-Based Noise Source Identification System


INTA (National Institute for Aerospace Technology) has recently acquired an array-based Noise Source Identification system from Brüel & Kjær.

In recent years, the Environmental Impact Laboratory of INTA (LIMA) had been developing their own microphone array system, but due to the large number of channels needed for expanding the aeroacoustics laboratory with wind-tunnel noise measurements, the INTA working acoustic group decided to purchase Brüel & Kjaer equipment for noise localisation.

The system consists of an array with 42 precision microphones, several PULSE LAN-XI modules and the PULSE Acoustic Test Consultant and Beamforming applications.

The microphones are capable of measuring up to 20 kHz and the Dyn-X input modules provide an extra-large dynamic range to avoid overloads. Using this system INTA can locate and identify noise sources of vehicle and aircraft components obtaining noise colour maps for each frequency of interest. This information helps the engineers to modify the structure in order to improve its aerodynamics and noise emission.

Following delivery and the site acceptance test, Brüel & Kjær also held a seminar to train the INTA engineers on the use of the system.

More information about Brüel & Kjær's Noise Array systems is available at: www.bksv.com/Products/PULSEAnalyzerPlatform/PULSESolutionsOverview/AcousticApplications/NSIArrayBased.aspx

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's PULSE data acquisition and analysis platform is a modular and scalable platform with over 12 000 systems sold worldwide.

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

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 - are also available throughout the year. For all course registration details visit www.bksv.com/courses

Brüel & Kjær is a subsidiary of UK-based Spectris plc (www.spectris.com) that has annual sales of £787m and around 6,000 employees worldwide in its 13 business units. Brüel & Kjær has 1150 employees worldwide, and is represented by sales offices in 55 countries.

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