About SeismoSignal

SeismoSignal constitutes an easy and efficient way to process strong-motion data, featuring a user-friendly visual interface and the capability of deriving a number of strong-motion parameters often required by engineer seismologists and earthquake engineers, such as:

• Fourier and Power spectra
• Elastic response spectra and pseudo spectra
• Overdamped and constant-ductility inelastic response spectra
• Root-mean-square (RMS) of acceleration, velocity and displacement
• Arias (Ia) and characteristic (Ic) intensities
• Cumulative absolute velocity (CAV) and Standardized Cumulative Absolute Velocity (CAV_STD)
• Specific energy density (SED)
• Acceleration (ASI) and velocity (VSI) spectrum intensity
• Housner intensity (HI)
• Sustained maximum acceleration (SMA) and velocity (SMV)
• Effective design acceleration (EDA)
• Predominant (Tp) and mean (Tm) periods
• Husid and energy flux plots
• Bracketed, uniform, significant and effective durations
• Number of Effective Cycles and Damage Index
• Impulsivity index (IP Index)
• Average Spectral Acceleration (Sa,avg/AvgSa)
• Maximum Incremental Velocity

The program is able to read accelerograms saved in in different text file formats, which may then be filtered and baseline-corrected. Polynomials of up to the 3rd order may be employed for the latter, whilst three different digital filter types are available, all of which capable of carrying out highpass, lowpass, bandpass and bandstop filtering.

Finally, and due to its full integration with the Windows environment, SeismoSignal allows for numerical and graphical results to be copied to any Windows application (e.g. MS Excel, MS Word, etc.), noting that the characteristics plots can be fully customised from within the program itself.