demo
代码说明:
音频信号的处理:导入一个时长若干秒的音频信号,得到该音频文件的频率fs和幅度A,显示信号的时域图和频谱图,加入频率为fs/3,幅度为2A的噪声,分析、显示并播放有噪声时时域图和频谱图,以及滤除噪声后的信号的时域图和频谱图。(Audio signal processing: Import a duration of several seconds of the audio signal to obtain a frequency fs, and the amplitude A of the audio file, the time-domain diagram of a display signal, and frequency spectrum, the frequency fs/3, amplitude noise 2A, analysis , display and playback of the noise always domain diagram and frequency spectrum, and the signal after the noise filtering time-domain diagram and spectrum FIG.)
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