数字信号处理双语复习提示
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Consider an one dimension signal x (n ),determine and draw the signal flow graph for the N=4
point, radix-2 decimation-in-frequency FFT algorithm of this sequence.
Consider a discrete-time sequenc,is it periodic? If it is, find its fundamental period.
Consider the following discrete systems:
(a) Determine analytically whether these systems are linear.
(b)Determine analytically whether these systems are time-invariant.
For the linear and time-invariant system described by the following
system function, determine
(a)The difference equation representation.
(b)The region of convergence and its impulse response sequence h(n) if the given system is a causal system.
(c)The region of convergence and its impulse response sequence h(n) if the given system is a stable system.
(d)The frequency response function if the given system is a stable system.
Given the following sequences:
(a)Determine the 4-point circular convolution ④.
(b)Determine the linear convolution.
(c)Determine the minimum N when circular convolution equal to linear convolution.
Design a lowpassIIR/ FIRfilter
The specifications are given as follows:
Give the main design steps
Given a system described by the following difference equation: Determine:
(a). The system function .
(b). The region of convergence and its impulse response sequence h(n) if
the given system is a causal system.
(c). The region of convergence and its impulse response sequence h(n) if
the given system is a stable system.
(d). The frequency response function if the given system is a stable system.
Given the first five values of the 8-point DFT of a real-valued
sequence x(n):
(a). Determine the 8-point DFT by X(k) using the properties of DFT.
(b). Determine the DFT of the sequence
Determine analytically the DTFT of each of the following sequence
Let x(n)= ,. Determine the odd part and the even part of x(n).