Audio3.0 is a program which allows you to simulate various types of parametric equalizers and elecronic crossovers. This program may also be used to determine the various Q's, gains, and center frequencies necessary to tune an audio system. A spectra file, generated by a variety of real time or spectrum analyzers may be input, plotted, and equalized on screen. The input data may also be smoothed via a curve fit algorithm. A known reference system response may also be input to eliminate certain unknowns in the measurement process, such as microphone response. Or the microphone response alone may be input to offset its response. See the on line help.