快速傅里叶变换是数字信号处理的常用数学工具，以运算速度快和信噪比阈值低为特点。
FFT is a mathematical tool commonly used in digital signal processing, and is characterized by fast operational speed and low SNR threshold value.
由于DSP具有体积小、功耗低、运算速度快和价格便宜等许多优点，非常适合于实时语音和视频压缩处理。
Because DSP has many advantages, such as compactness, low power consumption, high operation speed and low price, it is very suitable for real-time implementation on speech and video compression.
它充分利用DSP芯片运算速度快和专用指令的优点以及MATLAB强大的数值分析、计算、信号处理及图形显示功能等来计算电压闪变值。
It full USES of DSP chips for high speed and the advantages of command and MATLAB powerful numerical analysis, signal processing and graphics capabilities to calculate voltage flicker value.
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