Tracking an analog waveform and converting it to pulses that represent the wave's height above (or below)a threshold is termed ____.
A) pulse amplitude modulation (PAM)
B) codec
C) quantization
D) quantization levels

Question

Quizplus · Accepted Answer

PAM involves converting an analog waveform into a series of pulses that represent the amplitude (height) of the waveform at specific points in time. In PAM, the signal is compared to a threshold and a pulse is generated if the amplitude is above the threshold. Therefore, PAM is the most pertinent choice. Option B) Codec is a device that encodes or decodes digital signals. Option C) Quantization is the process of converting an analog signal to a digital signal by approximating the analog signal with a series of discrete values. Option D) Quantization levels is the number of discrete values that an analog signal is approximated to in the process of converting it to a digital signal through quantization.

Tracking an Analog Waveform and Converting It to Pulses That