Frequency Increment

Note that following the RECOMMENDED minimum tmax, the next two questions must agree with the gendis run, specifically enter tmax (the maximum recording time) and fsamin (the sample interval in seconds). The “Frequency interval” must be the same for both disper (which generates earth.crv) and the intended waves program run. If unsure, open the earth.crv file in your favorite editor, and compute the difference between consecutive frequencies (column 1). This frequency interval must match the one near the end of the genwav run (written to the terminal, see above for example). In this example:

 0.1464843660000000102883178E+01 -0.9765624400000000315813509E+00 = 0.48828