One of the most common digital-signal-processing techniques is the discrete Fourier transform (DFT), which breaks a signal into its component frequencies and can be represented as a matrix.

最常见的数字信号处理技术之一是离散傅立叶变换（DFT），它把一个信号分解成它的组成频率，并表示成一个矩阵。

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A device that is similar to a microprocessor, except that the internal CPU has been optimized for use in applications involving discrete-time signal processing.

一种类似于微处理器的的设备，不同的是它内部的CPU被优化，用于特定的应用，如离散信号处理。

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The Discrete Fourier Transform (DFT) plays an important role in digital signal processing and many other fields.

离散傅里叶变换（DFT）在数字信号处理等许多领域中起着重要作用。

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