Introduction - If you have any usage issues, please Google them yourself
Fourier transform to meet certain conditions, a function expressed as trigonometric functions (sine and/or cosine functions) or their linear combination of points. In different areas of research, (Fourier Transform source code) has a number of different variations, such as the continuous Fourier transform and discrete Fourier transform. Fourier analysis is the first hot process as a tool for analytical analysis has been proposed