语音信号的延时和混响

1）利用Windows下的录音机或其他软件，录制一段自己的语音信号，时间控制在1s左右，并对录制的信号进行采样；

2）语音信号的频谱分析，画出采样后语音信号的时域波形和频谱图；

3）将信号加入延时和混响，再分析其频谱，并与原始信号频谱进行比较；

4）设计几种特殊类型的滤波器：单回声滤波器，多重回声滤波器，全通结构的混响器，并画出滤波器的频域响应；

5）用自己设计的滤波器对采集的语音信号进行滤波；

6）分析得到信号的频谱，画出滤波后信号的时域波形和频谱，并对滤波前后的信号进行对比，分析信号的变化；

7）回放语音信号。

-1) the use of tape recorders or other software under Windows, record your own voice signal period, the time control in about 1s, and the recorded signal is sampled

2) the spectrum of the speech signal analysis, time domain waveform and frequency spectrum of the speech signal sampled after drawing

3) the signal to the delay and reverb, and then analyze the spectrum, and compare with the original signal spectrum

4) designed several special types of filters: a single echo filter, multi-echo filters, all-pass structure of reverb and draw the filter frequency response

5) use their own design filter for filtering the speech signal acquisition

6) Analysis of the spectrum of the signal obtained after filtering the time-domain waveform and draw spectrum signals, and comparing the signal before and after filtering, analyzing changes in the signal

7) playback voice signal.