输入一个低频率的正弦波和一个高频的正弦波叠加而成,通过观察频域图和时域图,低频波通过了滤波器,高频大部分被滤除-input of a low-frequency sine wave and a high-frequency sine wave overprinted, By observing frequency domain and time domain map plan, low-frequency waves through the filter, the majority of hig

语谱图是对一段语音在频域各个频段的能量的一种显示方式，一般做法是把语音分成若干帧，加窗后作FFT，求出每一帧不同频率的能量，求出语音每一帧不同频率的能量，一般是不同能量显示成不同颜色，显示成所谓语谱图。-The spectrogram display period of a voice in the energy band of the frequency domain, the general practice is the voice to be divided into several f