Which value is suitable for a discrete signal?
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Which value is suitable for a discrete signal?
For example, if a signal is in range 0-5 volts; a discrete time signal (not quantized) can take values like 0.2, 0.02, 0.0005, 2, 4 etc. (just anything in the range 0-5 volts).
What are the properties of a discrete-time signal?
Discrete-time signal: A signal x(n) is said to be discrete-time signal if it can be defined for a discrete instant of time. – Amplitude of the signal varies at every discrete values of n, which is generally uniformly spaced.
Can digital signal take fractional values?
A digital circuit works with digital signals, where all values are discrete. Since the converter is changing an analog signal that can take any fractional value into a digital signal that can take discrete values only, some information will be lost.
How do you know if a signal is discrete?
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).
Why do we need discrete signals?
Sampling discrete-time signals, i.e., using only every Nth sample of a sequence of samples, is useful for efficiently processing, transmitting, or storing information, if we can be sure that the sampling rate can be reduced without significant loss of information. This process is called decimation.
What is discrete-time signal?
A discrete signal or discrete-time signal is a time series consisting of a sequence of quantities. Unlike a continuous-time signal, a discrete-time signal is not a function of a continuous argument; however, it may have been obtained by sampling from a continuous-time signal. This process is called sampling.
Is digital signal necessarily to be discrete?
In signal processing, a digital signal is an abstraction that is discrete in time and amplitude, meaning it only exists at certain time instants.
Which signal is discrete-time period?
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| 14.57 | Dec 26, 2013 | Updated roles. |
| 14.56 | Dec 26, 2013 | Updated roles. |
| 14.55 | Dec 26, 2013 | Updated roles. |
| 14.54 | Dec 26, 2013 | Updated roles. |
What is difference between discrete and continuous 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.
What are discrete-time systems?
A discrete-time system is anything that takes a discrete-time signal as input and generates a discrete-time signal as output. Similar to the continuous-time case, we may represent a discrete-time system either by a set of difference equations or by a block diagram of its implementation.
Why do we need discrete-time signal?
3 Answers. Sampling discrete-time signals, i.e., using only every Nth sample of a sequence of samples, is useful for efficiently processing, transmitting, or storing information, if we can be sure that the sampling rate can be reduced without significant loss of information. This process is called decimation.