FTP, identify this linear transform named after a French mathematician.
This mathematical tool used in digital audio applications decomposes or separates a waveform or function into sinusoids of different frequencies which sum to the original waveform. It identifies or distinguishes the different frequency sinusoids and their respective amplitudes.  If you have SETI installed on your PC, a fast version is performed a few times per second.  FTP, identify this linear transform named after a French mathematician.
This mathematical tool used in digital audio applications decomposes or separates a waveform or function into sinusoids of different frequencies which sum to the original waveform.
Fourier Transform