This part ISO 18431 specifies methods for the digital calculation of a shock-response spectrum(SRS) given an acceleration input,by means of digital filters.The filter coefficients for different types of shock-response spectra are given together with recommendations for adequate sampling frequency.
BS ISO 18431-4:2007 history
2007BS ISO 18431-4:2007 Mechanical vibration and shock - Signal processing - Shock-response spectrum analysis