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# matlab 2

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### matlab 2

1. 1. Lab No.11 Practice (Signal Addition and Multiplication) Designed by : Dawar Awan dawar@cecos.edu.pk CECOS College of Engineering and IT March – July 2012
2. 2. Concept  Fourier series theory states that a periodic wave can be represented as a summation of sinusoidal waves with different frequencies, amplitudes and phase values.  The frequencies of the sinusoids are harmonically related. fk = k.fo  Where fo is the fundamental frequency and fk is the kth harmonic. CECOS College of Engineering and IT March – July 2012
3. 3. Signal addition CECOS College of Engineering and IT March – July 2012
4. 4. Signal addition y1 y2 CECOS College of Engineering and IT March – July 2012
5. 5. Signal addition CECOS College of Engineering and IT March – July 2012
6. 6. Task 1. Perform the following signal additions a) u[n] + u[-n] b) u[n+2] + u[n-2] 2. Perform the following signal subtractions a) u[n] - u [n+5] b) [1,2,3,4,5] - [5,4,3,2,1] 3. Multiply the following two signals a) 2n x u[n] 4. Decompose the following signal into its even and odd parts a) [1,2,3,4,5,4,3,2,1] Assume -5 ≤ n ≤ 5 for all questions CECOS College of Engineering and IT March – July 2012