This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: CARLETON UNIVERSITY Department of Systems and Computer Engineering SYSC 4405 Introduction to Digital Signal Processing Fall Semester, 2009 Assignment #7 Assigned: 4November2009 Due: In-class, Wednesday, 18November2009 = Please check the Bulletin Board often. All official course announcements are posted there. An expansion of what is presented in the lecture notes is required for this assignment. Note that an FIR approximation of an ideal IIR lowpass filter can be found using h FIR,LP [ n ] = w N [ n ] c sinc c n- N- 1 2 n N- 1 (1) where N is the number of filter coefficients and w N [ n ] is an appropriate windowing function of length N . A careful reader will notice a difference with the lecture notes. Here L = N- 1 2 is used which will correctly allow for N to be odd or even and still maintain symmetry of the filter coefficients. The presentation in the lecture notes should normally be limited to when N is odd. Also, note that when delaying the filter coefficients to form a bandpass filter, you should adjust the equation h BP [ n ] = 2cos( n ) h LP [ n ] (2) which was derived for an ideal lowpass filter h LP [ n ], to include the delay for a delayed version h LP,delayed...
View Full Document
This note was uploaded on 11/26/2009 for the course SYSC 4900 taught by Professor Multiple during the Fall '09 term at Carleton CA.
- Fall '09