REq-X - Response Equalisation
What is Response Equalisation?
Response Equalisation is a new technique that allows you to flatten the frequency response of a transducer (accelerometers and microphones) in real-time. Response Equalisation is done by filtering the time signal of a transducer by the inverse of the frequency response. Response Equalisation can be added to any transducer with a frequency response stored in the Transducer Database, and to all TEDS accelerometers.
Benefits
- More accurate measurements
- Wider frequency range
- The same transducer covers more applications

One Microphone for All Fields
Response Equalisation extends the frequency range in which the transducer can be used – and improves the accuracy of the measurement. This also means that you can use the same microphone for different sound fields – free field, pressure-field, and random. What’s more, the microphone can be corrected for various microphone accessories (for example, windscreen) and a better accuracy obtained.
Upper Frequency Extended by up to 50%
Until now it has been recommended only to use an accelerometer up to a third of the resonance frequency. Now the upper frequency can be extended by up to 50%.
Phase Equalization
REq-X includes phase equalization, allowing the phase of DC accelerometers to be used all the way up to half the mounted resonance frequency.
When REq-X is chosen, amplitude equalization is always used. Phase is included when information is available.