Description of time_x program from Softdepia.com:
This software deals with mapping between time domain and frequency domain. 3-dimension method is used. X-axis represents time. Y-axis represents frequency. Color represents energy of the frequency. The frequency distribution is displayed along Y-axis with the color for the entire signal interested. More energy there is redder the color will be and less energy more green. This software can be also used to investigate signal property. E.g. how test or survey of A is correlated to another test or survey. There are other functions such as filter, spectrum calculation etc.
time_x is a "Free to try" program. You can download and try it for an evaluation period.
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