is a Associate Professor in The University of Auckland, and he is also the director of the University of Auckland Centre for Earthquake Engineering Research (UACEER). He gained his diploma in civil engineering from the Ruhr University Bochum in Germany. After working in a group of consulting engineers in Germany, prof. Chouw returned to the research centre on structural dynamics at the Ruhr University Bochum, and he was awarded his doctorate in 1993. He joined the Okayama University in Japan in

ABSTRACT:The measurements of the response of structures to dynamic loadings due to e.g. wind, traffic, high-speed train, accidental impact or earthquakes, are usually involved noises of different possible sources. Hence, in the analyses of data obtained from physical laboratory experiments and field measurements the raw data normally needs to be filtered or altered prior to the evaluation and interpretation of the results. In this talk the advantage and the limitation of different approaches will be discussed. The understanding of the logic behind these approaches is necessary for their proper usage. Examples will be used to illustrate the consequence of the usage of these approaches for the data interpretation.