Amplitude-Modulation-and-Demodulation-using-NumPy-and-Matplotlib-

Aim:

To implement and analyze amplitude modulation (AM) using Python's NumPy and Matplotlib libraries.

Apparatus Required:

Software: Python with NumPy and Matplotlib libraries

Hardware: Personal Computer

Theory:

Amplitude Modulation (AM) is a technique used in electronic communication, primarily for transmitting information via a radio carrier wave. In AM, the amplitude of the carrier wave is varied in proportion to that of the message signal.

Algorithm:

1. Initialize Parameters: Set the values for carrier frequency, message frequency, and sampling frequency.

2. Generate Time Axis: Create a time vector for the signal duration.

3. Generate Message Signal: Define the message signal as a cosine wave.

4. Generate Carrier Signal: Define the carrier signal as a cosine wave.

5. Modulate Signal: Apply the AM formula to obtain the modulated signal.

6. Plot the Signals: Use Matplotlib to plot the message signal, carrier signal, and modulated signal.

Program:

Output:

Result: