Is a continuous time aperiodic signal discrete in the time domain?

1. What is aperiodic continuous signal?
2. Are periodic signals discrete?
3. Is continuous-time discrete?
4. Is frequency domain continuous or discrete?

What is aperiodic continuous signal?

Conclusion. Any aperiodic signal can be defined by an infinite sum of periodic functions, a useful definition that makes it possible to use Fourier Analysis on it by assuming all frequencies are present in the signal.

Are periodic signals discrete?

Such signals are called discrete-time signals. A discrete-time signal is periodic if there is a non-zero integer p ∈ DiscreteTime such that for all n ∈ DiscreteTime, x(n + p) = x(n). x(n) = cos(2π f n).

Is continuous-time discrete?

A continuous-time signal has values for all points in time in some (possibly infinite) interval. A discrete time signal has values for only discrete points in time.

Is frequency domain continuous or discrete?

A discrete frequency domain is a frequency domain that is discrete rather than continuous. For example, the discrete Fourier transform maps a function having a discrete time domain into one having a discrete frequency domain.