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DFT acronym, discrete fourier transform concept, mathematical technique used to analyze the frequency content of a discrete signal, transforming it from the time domain into the frequency domain.
Trailer and car crash caution signage sticker for the back of the trailer in two idioms english and spanish
Vector seamless pattern. Black dotted connecting lines with hearts isolated on white background. Repeating abstract design. Modern stylish texture. Contemporary monochrome background. Dashed lines
An old noisy VHS tape screen showing a warning message: the following program contains disturbing material, might be inappropriate for younger viewers; parental discretion is advised.
young woman operates smartphone display with online dating app deciding dislike or like button, while watching mature handsome man portrait. light city environment with blurry background bokeh effect

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