I want to download a free (or cheap) spectrum analysis program for my old Toshiba laptop. I think it has a microphone input, & I guess the mike will be an old analogue Radio Shack Sound Level meter (calibrated 30HZ-10KHZ plus or minus 3 db.) I will be getting a 10 band MXR M-108 through the mail soon. The goal is to try to appropriate the sounds of two or three bass/string set combos I like, using just one bass (space & budget limitations, I know it's a compromise, no one bass can do the job of three). Number one priority is an easily readable breakdown of the overtone constituents.