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Project2_C08

# Project2_C08 - EE 2312 Project 2 Due February 6 2008...

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EE 2312 Project 2 Due: February 6, 2008 Applications of Difference Equations This project requires the use of GoldWave and MATLAB software. The MATLAB is available on the computers in the ECE Department and the WPI network. You can download the GoldWave software at the site www.goldwave.com . 1. The data for this part is the sound file (Signal_1) which is available at the myWPI site. This sound is a recording of a piano note. We know that the frequency of the note is above 200 Hz. Use the spectrum of the signal to figure out which note has been recorded. Due to the poor condition of recording an undesired signal (noise) was also recorded. What is the center frequency of this undesired signal? What might be the source of this noise? Design a difference equation that removes the noise from the signal, and specify the a i and b j coefficients for the equation. Assuming a sampling frequency of 8,000 Hz and pure sinusoidal model for the piano
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