If you have data in a .xls .dat .txt file and you want to calculate the fourier transform to find the frequencies that make up the signal Use this app, the only condition is that the amount of data is powers of 2. The data f(t ) must be "in a single column", with no time column. There should be no text or blank lines.

The maximum amount of data that the App works with is 2^20.

how to use:

1.- click open button: navigate between files and select the file with data, this can be .txt .dat .xls

2.- click on the Calculate button: the frequency screen will be displayed with the calculations made. To see the graph click on the "GRAPH" tab.

the maximum amount of data is 2^20=1048576 data, it can take up to 10 minutes to load that amount of data and approx. 2 minutes to find the frequencies in a mid-range mobile. It could take longer if the mobile is low-income.