After the sampling step, the resulting signal is best described as which?

After the sampling step, the resulting signal is best described as which?

• A. A Discrete-time, discrete amplitude signal
• B. B Continuous-time, discrete amplitude signal
• C. C Discrete-time, continuous amplitude signal
• D. D Continuous-time, continuous amplitude signal

Answer: (C)

Sampling converts a continuous-time signal into a sequence by taking values at regular time instants. The time axis becomes discrete (indexed by integers), while each sample preserves the original signal’s real-valued amplitude. Since quantization happens in a later conversion step, the sample values are still continuous-valued. Therefore, after sampling, the signal is discrete-time with continuous amplitude.

Sampling converts a continuous-time signal into a sequence by taking values at regular time instants. The time axis becomes discrete (indexed by integers), while each sample preserves the original signal’s real-valued amplitude. Since quantization happens in a later conversion step, the sample values are still continuous-valued. Therefore, after sampling, the signal is discrete-time with continuous amplitude.