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# Hi Need help with this questions Please help me There is no...

Hi Need help with this questions Please help me

There is no rush. Let me know if you can do this

Question 1.1. (TCO 1) The magnitude frequency response of a filter is usually graphed in decibels versus
frequency using which of the following equations? (Points : 5)
20 log (Vout)
Vout
20 log (Vout/Vin)
Vout/Vin
Question 2.2. (TCO 2) Given a sampling frequency of f
s
and an input signal of f
1
which is greater than f
s
/2, how would the resulting aliased frequency, f
a
, be expressed? (Points : 5)
f
a
= f
s
+ f
1
f
a
= f
1
- f
s
f
a
= f
1
+ f
s
f
a
= f
s
- f
1
Question 3.3. (TCO 2) The Nyquist sampling frequency requirement states _____. (Points : 5)
the sampling frequency must be equal to the maximum input frequency
the sampling frequency must be greater than or equal to the maximum input frequency
the sampling frequency must be equal to twice the maximum input frequency
the sampling frequency must be greater than or equal to twice the maximum input frequency
Question 4.4. (TCO 3) Which equation correctly describes a sampled signal with values of 1 at n = 0, 1, 2,
and 3 and 0 everywhere else? (Points : 5)
x[n] = u[n] – u[n-3]
x[n] = u[n] – u[n-4]
x[n] = u[n-4] - u[n]
x[n] = u[n] + u[n-1] + u[n-2] + u[n-3]
Question 5.5. (TCO 3) For a moving average filter with b
k
coefficients equal to 0.2 and given that the input
to the filter starts at sample x[n], how many input samples are required to define all input terms for all
filter coefficients? (Points : 5)
0
1
5
10
Question 6.6. (TCO 4) For a 7-term moving average filter, the lowest digital frequency where the gain is
zero occurs at what frequency Ω? (Points : 5)
0.449 radians
0.143 radians
0.898 radians
Zero gain never occurs.

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