Which statement describes sampling?

Which statement describes sampling?

• A. A process where the signal is measured several times per second and recorded as binary digits
• B. Hardware measures the sound level
• C. Several times per second
• D. And records this as binary digits

Answer: (A)

Sampling is the process of turning an analog signal into digital form by measuring the signal at regular time intervals and converting each measurement into a binary value. The described statement fits best because it combines both key parts: measuring the signal several times per second (the regular sampling) and recording those measurements as binary digits (digital encoding). The other statements are only parts of the idea or describe a detail without connecting the measurement to a digital representation, so they don’t fully capture what sampling entails. For example, taking measurements frequently is part of sampling, but without noting the conversion to binary, it’s incomplete.

Sampling is the process of turning an analog signal into digital form by measuring the signal at regular time intervals and converting each measurement into a binary value. The described statement fits best because it combines both key parts: measuring the signal several times per second (the regular sampling) and recording those measurements as binary digits (digital encoding). The other statements are only parts of the idea or describe a detail without connecting the measurement to a digital representation, so they don’t fully capture what sampling entails. For example, taking measurements frequently is part of sampling, but without noting the conversion to binary, it’s incomplete.