About this document
DFT Applications in Signal Analysis by jeysam is a document available to read on EtoBox.
The document discusses spectral analysis of signals using the discrete Fourier transform (DFT). It explains that many natural and human-made signals contain information encoded in their sinusoidal components, and the DFT can be used to extract frequency, phase, and amplitude information from a signal. Taking the DFT of short signal segments and averaging the results reduces noise in the frequency spectrum. Longer DFTs provide better frequency resolution but do not reduce noise on their own.
- Author
- jeysam
- Language
- EN