Digital Signal Processing

Lab Homework 2, Due 4/6

Problem 1

Problem 2.11 (Page 72)

(a) Determine the Fourier transform of

x[n]=sin(pi*n/4)

Plot its magnitude and phase spectra.

(b)

Plot its magnitude and phase spectra.

(c)

Calculate the inverse Fourier transform of  to get the output y[n].

(d) y[n] + 0.5y[n-4] = x[n] – x[n-2]

Get the output y[n] by the command filter.

(e) Compare the outputs in (c) and (d).

Problem 2

Problem 2.17 (Page 73)

(a) Determine the Fourier transform of the sequence

Plot its magnitude and phase spectra.

(b) Determine the Fourier transform of the sequence

Plot its magnitude and phase spectra.

ftp your homework to

ftp://signalstud@140.127.208.113

in the directory 數位訊號處理\HW2

by the following format:

檔案名稱：hw#_學號.zip

例如：資工同學，作業1

檔案名稱：hw1_a09355xx.zip

The password is given in class.