Bruel & Kjaer UK Ltd. - PRODUCT NEWS



The latest release PULSE 11, of the PULSE sound and vibration data acquisition and analysis platform, introduces Response Equalisation Extreme (REq-X) unique to Bruel & Kjaer. The new REq-X feature extends the measurement capability of the platform, facilitates the first-time acquisition of valid data, and eliminates annoying measurement re-takes.

The new REq-X feature extends and flattens the frequency-response curves of transducers (like accelerometers and microphones) in real time, during data acquisition.

The PULSE Multi-analyser (pressure, sound, and vibration data-acquisition and data-analysis) platform has a long and successful history of use in many research and development fields, such as aerospace, automotive, environmental and production testing. The advantages of using PULSE 11 are more accurate measurements, wider frequency range, and using the same transducer covers more applications.

Response Equalisation extends the frequency range in which a single transducer can be used and improves the accuracy of the measurement. This also means that the same microphone can be used for different sound fields: free field, pressure-field, and random. Furthermore, the microphone can be corrected for various microphone accessories (for example, windscreen) and a better accuracy obtained.

Accelerometers upper-frequency-limit extended by 50%. Until now it has been recommended to limit the use of accelerometers to frequencies up to one third of their resonant frequency. Using PULSE 11, the recommended upper limit of frequency can be extended by 50 percent, to half the resonant frequency.

Applications include: Acoustics, Machine Diagnostics, Electro-acoustics, Structural Dynamics, and Vibroacoustics. For an overview of PULSE applications, please visit

The PULSE 11 platform comprises acoustic transducers, vibration transducers, signal conditioning amplifiers, modal exciters, data acquisition and analysis system, and data management and reporting tools. In addition to multi-channel data recording, the platform’s acquisition and analysis features include: Fast Fourier Transform (FFT) and Constant Percentage Bandwidth (CPB) analysis.

About Brüel & Kjær
With more than 60 years’ experience, Brüel & Kjær is a world leading manufacturer and
supplier of sound and vibration solutions for use in a wide range of applications including
environmental noise measurements, building acoustics, vibration measurements and
quality control for use in the automotive, aerospace and consumer industries, as well
as by local authorities.

For more information, please contact :-

Bruel & Kjaer UK Ltd.
Bedford House, Rutherford, Close, Stevenage, Herts. SG1 2ND. UK
Tel: +44(0) 1438 739000
Fax: +44(0) 1438 739099

November 2006

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