用java画音频信号的时域图Use Java painting audio signal time figure-Use Java painting audio signal time figure

采用java画出啊音频信号的时域图和频域图，先对采集到的音频信号傅里叶变换-audio signal

编写一个多径瑞利衰落信道，分析信号的时域和频域，比较两者的不同。-Write a different frequency domain comparison between a multi-path Rayleigh fading channel, signal analysis and time domain of.