The relationship among frequency components of multi-tone, perceptual cepstrum distance and subjective evaluation is studied for different frequency response curves through theoretical calculations and subjective experiments.

Conventional methods which stimulate seismic records cannot increase frequency components and improve signal-to-noise ratio at the same time.

In order to explain the advantages of GA identification method compared with spectral identification method and the feasibility of the application to multi-frequency component analysis of building oscillation signal,a set of simulated signal(without noise and with random w.