Abbreviation for 'Discrete Fourier Transform,' a mathematical technique used in signal processing to analyze frequencies in digital signals.
DFT is an acronym combining 'Discrete' (separate, distinct), 'Fourier' (named after mathematician Joseph Fourier), and 'Transform' (a mathematical operation). Developed in the 1960s-70s for computer applications.
Every time you use face recognition on your phone or stream music, DFTs are running billions of times per second to break sound and images into their component frequencies!
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