brsp infile ifact tmax infile =input file name ifact = resample factor ifact>=1 = 1 sample interval halved. = 2 sample interval 1/4 of original = n sample interval 1/(2**n) of original (note: trace size increases by 2**ifact) tmax =max time of output trace (float) sec NOTE: This is a radix 2 algorith, so trace may be with zeros before computing new number of samples BSEGY number of samples header is 16 bit Maximum number of samples limited to 32,767