Signal Filtration is used for filtering signals coming to the input channels of spectrum analyzers, strain-gauge stations, and seismic stations, for further processing by ZETLAB programs. Signal Filtration can also be used for processing virtual channels created by programs such as Vibration Meter, Strain-Gauge Sensor, etc. Signal Filtration operates with signals both in real time and by reproduction of recorded signals.
During various tests, measurements, diagnostics, and voice recognition, carried out amid interferences, one faces the problem of accurate evaluation of some signal parameters, e.g. level, frequency, correlation with other signals. If the useful signal and interference are divided in the frequency area, the most popular method would be signal filtration.