Pulse Code Modulation (PCM)
作者：Eric Lau
1. Min Rewuired Bandwidth
2. Encoding
3. Component
3.1. PCM Bandwidth
3.2. Max Data Rate of a Channel
4. Sampling
4.1. Method
4.1.1. Ideal
4.1.2. Natural
4.1.3. Flat-top
4.2. Sampling Rate
4.2.1. Nyquist rate sampling
4.2.1.1. Low-pass signal
4.2.1.2. Bandpass signal
4.2.2. Oversampling
4.2.3. Undersampling