Online Pulse Code Modulation (PCM) Simulator

Instructions for Pulse Code Modulation (PCM)

• Note: Use the input fields to enter the message frequency, sampling frequency, and quantization levels.
• Step 1: Click on Generate Message to create the analog message signal. Sampling frequency should be higher than the message frequency.
• Step 2: Click on Plot Quantized Signal to view the quantized signal.
• Step 3: Click on Generate PCM Signal to generate the PCM signal.

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Message Frequency (Hz):

Sampling Frequency (Hz):

Quantization Levels:

Quantization SNR (dB):

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Instructions for Pulse Code Demodulation

• Step 1: The decoder converts encoded binary PCM data back into quantized analog values.
• Step 2: Click on Demodulate PCM Signal to reconstruct the message signal.

Cut-off Frequency (Hz)

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PCM Quantization Table

Enter the number of quantization levels

Levels (L):

Quantization Levels vs Bit Depth

Bits	Levels (L = 2^bits)	Step Size (Δ)	(Quantization Index = 0) Amplitude	(Quantization Index = Mid) Amplitude	(Quantization Index = Max) Amplitude	Quantization SNR (dB)