09_Worksheet

# 09_Worksheet - Name Date Worksheet 9(There was no Worksheet...

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Name ___________________ Date _____________ Worksheet 9 (There was no Worksheet 8) - turn in on 4/16 1. If you have a sound and you want to attenuate all the high frequencies of the sound above 20,000Hz, what type of filter would you use? a. high pass b. low pass c. band pass d. stop band (notch) 2. The following equation: "Yn = .5x n + .5x n-1 " is a type of filter. What type of filter is it? a. high pass b. low pass c. band pass d. stop band (notch) 3. The equation in the above question is called a moving average filter. It is not a recursive filter. Which of the following equations represent a recursive filter? a. Yn = .5x n - .5x n-1 b. Yn = .7x n + .3y n-1 b. Yn = .5x n + .3x n-1 + .2x n-2 4. What type of filter does "Yn = .5x n -.5x n-1 " implement? a. high pass b. low pass c. band pass d. stop band (notch) 5. Which type of filters use the parameters: center frequency, band width a. high pass b. low pass c. band pass d. stop band (notch) 6. Which type of filters use the parameter: cut-off frequency

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09_Worksheet - Name Date Worksheet 9(There was no Worksheet...

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