PCM decoder

Introduction:

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we convert the bit stream to sinusoidal wave and draw the corresponding wave. The activities will be as following.

1. We have the bit stream. I convert it to code number.
2. From the code we will get normalize quantized value.
3. We add the error with the normalized quantized value.
4. Then this value will be multiplied by the Delta value which will be normalizing PAM value.
5. Then we will draw the line between two successive point and will get a curve.

Pulse Code Modulation

Introduction:

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We know that a digital signal is superior to an analog signal. The tendency today is to change an analog signal to digital data. In this section we describe two techniques, pulse code modulation and delta modulation. The most common:

1. The analog signal is sampled.
2. The sample signal is quantized.
3. The quantized value are encoded as streams of bit.