Signal

Inverse Fourier Transform of piecewise function

Inverse Fourier Transform of piecewise function
  1. What is the inverse FFT?
  2. What is FFT and IFFT in DSP?

What is the inverse FFT?

Inverse Fast Fourier transform (IDFT) is an algorithm to undoes the process of DFT. It is also known as backward Fourier transform. It converts a space or time signal to a signal of the frequency domain.

What is FFT and IFFT in DSP?

FFT (Fast Fourier Transform) is able to convert a signal from the time domain to the frequency domain. IFFT (Inverse FFT) converts a signal from the frequency domain to the time domain. The FFT of a non-periodic signal will cause the resulting frequency spectrum to suffer from leakage.

Theorem What is theorem under this formula?
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