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STIFTELSEN SVENSK BERGTEKNISK FORSKNING SWEDISH ROCK ENGINEERING RESEARCHApril 21st, 2004
where C is the speed of propagation associated with the mode of oscillation (i.e., the P- or S-wave velocity of the medium), and fmax is the highest frequency of the wave. Hence, to ensure accurate propagation of the waves associated with pulses P1 and P2, their frequency content must be known. This was achieved by means of FFT- analyses (Fast Fourier Transform) of the two pressure-time
