practice2 - University of Notre Dame Department of Electrical Engineering EE 30344 Signals and Systems I Dr M Haenggi November 7 2006 mh Practice Exam

practice2 - University of Notre Dame Department of...

This preview shows page 1 out of 1 page.

University of Notre Dame November 7, 2006 mh Department of Electrical Engineering EE 30344 – Signals and Systems I Dr. M. Haenggi Practice Exam for Midterm 2 1. A CT LTI system is described by the frequency response H ( ) = e - j 2 ω 2 + ω 2 . Find the output of the system when the input is sin(3 t + π/ 8). 2. A voice signal m ( t ) with the FT M ( ) given below is modulated into an AM radio signal of the form z ( t ) = (1 + m ( t )) cos(10 6 πt ) . Sketch the FT of z ( t ). M(j ) ϖ ϖ 1 10 -10 4 4 3. An LTI DT system has input x [ n ] and output y [ n ]. We observe that when x [ n ] = δ [ n ], y [ n ] = 0 . 5 δ [ n ] + 0 . 5 n cos( πn 3 ) u [ n ]. Find a difference equation relating
Image of page 1

You've reached the end of your free preview.

Want to read the whole page?

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes