Fast Fourier Transform
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An algorithm for performing discretized Fourier transforms at high speed on computers, etc. It is widely used in frequency analysis of digital signals, as well as in communications and image processing, and various algorithms have been devised that can reduce the number of calculations and perform calculations efficiently. FFT (fast Fourier transform). Source: About Shogakukan Digital Daijisen Information | Legend |
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コンピューターなどで、離散化されたフーリエ変換を高速で行うためのアルゴリズム。デジタル信号の周波数解析をはじめ、通信・画像処理などに広く用いられ、計算回数を減らして効率よく計算できる種々のアルゴリズムが考案されている。FFT（fast Fourier transform）。
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