做内网上的dsp一百套机考题，里面几道题完全无解啊~~想破头了，关于采样的。。。采样前后时频域难道全要画出来？？？我是没辙了，召唤达人~~
18.Consider the frequency spectrum of following periodic signal as below, which is sampled to get discrete-time signal The sampling frequency is second. Determine the sampling type of the process. Sketch the time domain and frequency domain plot of continuous time and sampled signal. Analysis the sampling process.
12.Consider the frequency spectrum of following periodic signal as below, which is sampled to get discrete-time signal The sampling frequency is second. Determine the sampling type of the process. Sketch the time domain and frequency domain plot of continuous time and sampled signal. Analysis the sampling process.
9. Consider the following periodic signal as below, which is sampled to get 512-points discrete-time signal The sampling period is second. Determine the sampling type of the process. Sketch the time domain and frequency domain plot of continuous time and sampled signal. Analysis the sampling process.
[ 此帖被翔子在2008-01-12 19:21重新编辑 ]
