Instructions for Pulse Code Modulation (PCM)

Step 1: Click on 'Generate Message' button to generate analog input message signal
Step 2: You can change the message and carrier signal frequencies from the input field. The carrier frequency has to be more than the message frequency
Step 3: Click on 'Generate PCM Signal' button to generate Pulse Code Modulated (PCM) Signal. Here signal vary from amplitude -8 to +8 and step size is 16 / 'Quantization Levels'

Message Frequency (Hz):

Sampling Frequency (Hz):

Quantization Levels:

PCM

Quantization SNR (dB)

Instructions for Pulse Code Demodulation

Step 1: The decoder's primary function is to convert the encoded binary PCM data back into quantized analog values. The reconstruction filter is used to recover the original message signal from the sampled PCM signal (often a low-pass filter, smooths out the quantized values to reconstruct the continuous analog signal from the discrete PCM samples)
Step 2: You can Demodulate the PCM Signal clicking on the 'Demodulate PCM Signal' button

Cut-off Frequency (Hz)

PCM_Demodulation

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)