Table of Contents
Why are digital signals considered discrete signals?
It is continuous in both time and magnitude axis. If we now take its samples at fixed intervals of time (known as sampling),it becomes discontinuous(finite values) in time but it is still continuous (infinite values) in magnitude. This is discrete signal.
What is the difference between digital signal discrete signal and continuous signal?
Digital Signals are discontinuous as they are discrete in both time and amplitude. Analog signals are continuous in both time and amplitude. When analog signals are sampled in time, discrete signals are obtained ( which are discontinuous in time , but continuous in amplitude).
Which of the signal is discrete in time?
A digital signal is discrete in amplitude and time.
What do you mean by discrete-time and discrete valued signals?
Conversion of a discrete-time continuous valued signal into a discrete-time, discrete valued digital signal • Digital signal values are a finite set of possible values. Discrete–time Signals are defined only at certain specific values of time or variable.
What is continuous and discrete signal?
A signal, of which a sinusoid is only one example, is a sequence of numbers. A continuous-time signal is an infinite and uncountable set of numbers, as are the possible values each number can have. between a start and end time, there are infinite possible values for time and instantaneous amplitude, .
What is continuous and discrete time signal?
A signal is considered to be a continuous time signal if it is defined over a continuum of the independent variable. A signal is considered to be discrete time if the independent variable only has discrete values.
Is time continuous or discrete?
Time is a continuous variable. You could turn age into a discrete variable and then you could count it. For example: A person’s age in years.
Why do we call continuous time signal analogue?
Analogue signals are so called because they are modulated in ways that are directly proportional (analogous) to changes in the source material they encode, and their modulations consist of smooth transitions between states (slopes) rather than the abrupt changes (steps) which are characteristic of digital signals.
What is the difference between discrete time signal and digital 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. Digital signal can be obtained from the discrete-time signal by quantizing and encoding the sample values.
What is the difference between discrete-time and 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.
What is a continuous-time signal?
Continuous-time signals are characterised by independent variables that are continuous and define a continuous set of values. Usually the variable indicates the continuous time signals, and the variable n indicates the discrete-time system.
What is the difference between analog and digital signals?
•discrete (digital) signal– signal that is continuous in time and assumes only a limited number of values (maintains a constant level and then changes to another constant level) Analog vs. Digital (cont.)8 Both analog and digital data can be transmitted using either analog or digital signals. example: analog signaling of analog and digital data