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by: Palmese Notetaker


Marketplace > Villanova University > > Engineering
Palmese Notetaker

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This 5 page Class Notes was uploaded by Palmese Notetaker on Wednesday August 17, 2016. The Class Notes belongs to at Villanova University taught by in Fall 2016. Since its upload, it has received 3 views.


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Date Created: 08/17/16
• EGR1205 Homework Spring 2016 Use Figure #1 for problems 1, 2 and 3 2 1.8 1.6 1.4 1.2 Amplitude (volts) 1 0.8 0.6 0.4 0.2 0 0 0.01 0.01 0.02 0.02 0.03 0.03 0.04 0.04 0.05 0.05 Time (seconds) Figure 1 1. Determine the sampling period for the waveform shown in Figure 1. 2. Determine the sampling rate (frequency) for the waveform in Figure 1. 3. Determine the period and frequency of the signal in Figure 1. Use Figure #2 for problems 4 and 5          Figure 2 4. Determine the highest frequency in this signal spectrum 5. Determine the Nyquist rate for sampling this signal. 6. Your PC sound card is set for a sampling rate of 8000 Hz with 8 bits used to encode each sample. How many bits does your system need to store if 3 minutes of music are to be digitized (assume a single channel and not stereo)? Use Figure #3 for problems 7 and 8 A B 7. For Filter A, what is the filter type and cutoff frequency? 8. For Filter B, what is the filter type and cutoff frequency? Use Figure #4 for problems 9 and 10 9. For Filter A, what is the center frequency and Q of the filter? 10. For Filter B, what is the center frequency and Q of the filter? 11. Determine the three formants in the following frequency spectra: 12.Draw the Filter Schematic for the following filter types: Low Pass High Pass Band Pass Band Notch 13.  You are burning the latest song you bought on ITunes to a disk.  The song is 3  minutes, 23 seconds long and was sampled as a stereo signal (two sides, left and right)  at 44.1 kHz using 16­bit encoding.  How much space on the disk does this one track  take up?  If your CD is 640MBytes, how many songs of this size can you fit on one disk  (assume 1 byte is 8­bits in length)?  Remember, you don’t want fractional songs!  How  many songs could be saved on this same CD if the sampling rate was 128kHz using 32  bit encoding?  14.  The highest resolution for your desktop/laptop monitor is 1280 x 1024 pixels with  32­bit encoding.  This means 8 bits for the R, G, and B channels plus 8 more for the  alpha channel that is for effects like transparency.  How many bits are needed to  describe the total space on the screen?  If the monitor refreshes at 60 Hz (60 times per  second), how many bits must the graphics card draw every second?  How does this  compare to the lowest resolution, which is 800 x 600 with 16­bit encoding (4 bits for  each color and 4 more for the alpha channel)?


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