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What is a continuous and discrete time signal?
A continuous signal or a continuous-time signal is a varying quantity (a signal) whose domain, which is often time, is a continuum (e.g., a connected interval of the reals). That is, the function’s domain is an uncountable set. To contrast, a discrete-time signal has a countable domain, like the natural numbers.
What is the difference between continuous and analog signal?
A continuous signal cannot be stored, or processed, in a computer since it would require infinite data. Analog signals must be discretized (digitized) to produce a finite set of numbers for computer use. When analog signals are brought into a computer, they must be made discrete (finite and countable).
Are all continuous signal analog?
At its base, an analog signal is a continuous signal in which one time-varying quantity (such as voltage, pressure, etc.) represents another time-based variable. In other words, one variable is an analog of the other.
What is the difference between discrete and continuous signals?
From a general point of view, signals are functions of one or several independent variables. There are two types of signals – discrete-time and continuous-time signals. Discrete-time signals are defined at the discrete moment of time and the mathematical function takes the discrete set of values.
Which is a digital representation of continuous time?
It is a digital representation of continuous-time signal. The discrete-time signal can be represented and defined at certain instants of time in its sequence. That is, the discrete-time signal is able to define only at the sampling instants.
Which is an odd signal discrete time or continuous time?
The discrete-time signal x n and continuous-time signal x ( t) are even if they are equal to their time-reversed counterparts, x n = x – n and x ( t) = x ( – t). And the signals are odd, if x n = – x n and x ( t) = – x ( – t). Odd signals are always 0 when n = 0, or t = 0.
What are the practical examples of a continuous time signal?
Continuous signals are “the signals or quantities that can be defined and represented at any instant of time in the sequence.” That is, infinite or uncountable set of number sequence. These signals have finite or infinite sequence with time. These are also called analog signals.