Bruel & Kjaer has introduced its Response Equalisation Extreme (REq-X) measurement solution as part of its PULSE sound and vibration data acquisition and analysis platform. It extends the measurement capability, 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 offers more accurate measurements, wider frequency range, and uses the same transducer to cover 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 fi eld, pressure-field, and random. Furthermore, the microphone can be corrected for various microphone accessories (for example, windscreen) and a better accuracy obtained.

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 per cent, to half the resonant frequency. Applications include: Acoustics, Machine Diagnostics, Electro-acoustics, Structural Dynamics, and Vibroacoustics.