A/D conversion is described as what?

A/D conversion is described as what?

• A. An electronic circuit that converts continuous signals into discrete digital numbers
• B. A digital filter that removes noise
• C. An analogue amplifier that increases signal strength
• D. A software process that encodes audio into mp3

Answer: (A)

Converting an analog signal to digital numbers means taking a signal that varies continuously in time and amplitude and turning it into a sequence of discrete digital values that a computer or digital circuit can process. This is done by an analog-to-digital converter, which samples the signal at regular time intervals and assigns each sample a finite set of amplitude levels, producing digital numbers. The result is a digital representation of the original waveform that can be stored, processed, or transmitted in digital form. This differs from a digital filter, which works on data that’s already digital; an analog amplifier, which only increases signal strength while staying in analog form; and MP3 encoding, which compresses digital audio rather than converting from analog to digital.

Converting an analog signal to digital numbers means taking a signal that varies continuously in time and amplitude and turning it into a sequence of discrete digital values that a computer or digital circuit can process. This is done by an analog-to-digital converter, which samples the signal at regular time intervals and assigns each sample a finite set of amplitude levels, producing digital numbers. The result is a digital representation of the original waveform that can be stored, processed, or transmitted in digital form. This differs from a digital filter, which works on data that’s already digital; an analog amplifier, which only increases signal strength while staying in analog form; and MP3 encoding, which compresses digital audio rather than converting from analog to digital.