How do you find the frequency of a discrete-time signal?
The frequency is then simply f = 1/N or 2*pi/N (in angular frequency, radians). So far there are not much difference besides the fact that N can only be a positive integer smaller than the signal length in the discrete case.
What is the maximum frequency of discrete-time signal?
(2) shows that a signal with frequency π is an alternating signal, so ω=π clearly is the maximum possible frequency of a discrete-time signal.
How we imagine / say frequency in discrete time signals?
A discrete signal can be a representation of a continuous time signal, measured at distinct time intervals. The time between each sample is called the sampling period, and the sampling frequency is then one over the sampling period. This concept is external to the signal.
How is the unit sample sequence used in discrete time?
Theunit sample sequence(Figure 2.3a) is defined as the sequence δ[n]= 0,n= 0, 1,n= 0. (2.3) The unit sample sequence plays the same role for discrete-time signals and systems that the unit impulse function (Dirac delta function) does for continuous-time signals and systems.
How can the frequency of a signal vary?
How can a frequency of a signal vary (increase) from 0 to π and (decrease) from π to 2 π. Isn’t it should be same from 0 to 2 π ? Let’s assume that ω = π. This gives (because e j π = − 1 ). Eq. ( 2) shows that a signal with frequency π is an alternating signal, so ω = π clearly is the maximum possible frequency of a discrete-time signal.
How is an arbitrary sequence represented in the time domain?
An arbitrary sequence can be represented in the time- domain as a weighted sum of some basic sequence and its delayed (advanced) versions k pn pk n k 6 2011/3/2 Digital Signal Processing 11 The Norm of a Discrete-Time Signal Size of a Signal- given by the norm of the signal Lp-norm： where p is a positive integer