Leonid Ovanesyan (@Leonitis)

Leonid is a DSP and computer engineer with experience in algorithm design and development, firmware, software, fixed-point arithmetic, and computer architecture. He received an MSEE from the University of Colorado at Boulder in 2011. His interests include modems, audio and image processing, and machine learning.

The DFT Output and Its Dimensions

Leonid Ovanesyan December 29, 20155 comments

The Discrete Fourier Transform, or DFT, converts a signal from discrete time to discrete frequency. It is commonly implemented as and used as the Fast Fourier Transform (FFT). This article will attempt to clarify the format of the DFT output and how it is produced.

Living in the real world, we deal with real signals. The data we typically sample does not have an imaginary component. For example, the voltage sampled by a receiver is a real value at a particular point in time. Let’s...

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