Question

What process involves creating a digital representation of analog data by measuring the analog data at regular intervals called samples?

a) Sampling
b) Quantization
c) Digitization
d) Modulation

Answer 1

The process of creating a digital representation of analog data by regularly measuring the data is called sampling, and it is part of digitization.

Step-by-step explanation:

The process that involves creating a digital representation of analog data by measuring the analog data at regular intervals called samples is sampling. This is part of the larger process known as digitization, which converts analog signals into a digital form. During sampling, analog signals are measured at consistent time intervals. If the signal exceeds a certain voltage cutoff value, the sample is recorded. After sampling, each sample is then quantized into a discrete numerical value for digital representation.

Answer 2

In digitizing analog data, the process involves measuring data at regular intervals called samples, known as sampling. Sampling is crucial for creating a digital representation of the analog signal, preserving its essential characteristics.

a) Sampling

Step-by-step explanation:

In the process of digitizing analog data, the crucial step involves measuring the analog data at regular intervals known as samples. This process is referred to as "sampling." During sampling, discrete points of the continuous analog signal are captured at specific time intervals to create a digital representation. It is a fundamental step in converting analog information into a format suitable for digital processing and storage.

Sampling is vital for preserving the essential characteristics of the analog signal while converting it into a digital form. The sampling rate, measured in hertz (Hz), determines how frequently these samples are taken per second. The Nyquist-Shannon sampling theorem states that the sampling rate must be at least twice the highest frequency component of the analog signal to avoid aliasing and accurately reconstruct the original signal during playback.

In summary, the answer is "a) Sampling" because it precisely captures the essence of the process involving the measurement of analog data at regular intervals to create a digital representation. The proper application of sampling, adhering to the Nyquist-Shannon theorem, ensures the faithful representation of the analog signal in the digital domain.