Engineering, 10.11.2019 02:31 alaynajk04
Sampling rate conversion rate changing is accomplished with a combination of upsampling (interpolation) and downsampling (decimation). in this problem you will consider how to properly perform sampling rate conversion. a) generate a test signal consisting of two sinusoidal components, one with a frequency of 0.02 times the sampling frequency, and the other with a frequency of 0.09 times the sampling frequency. the general form of a sampled sinusoid looks like x(i) = sin 27 jo" + e, where like x(t) = sin is the desired analog frequency and f is the f. sampling frequency. since the desired frequencies are specified as fractions of the sampling frequency, the following matlab code will accomplish generating 200 points of this test signal. be sure you understand how this code works. n=0: 1: 199; xl=sin(2*pi*n*0.02); x2=sin(2*pi*n*0.09); x=x1+x2; examine the two signals individually to convince yourself they are correct, then create a plot of the overall test signal using either plot or stem. when you look at the two signals, you should see about 50 points per period of the lower frequency sampled sinusoid and about 11 points per period of the higher frequency sampled sinusoid. note: if you want to hear what this test signal sounds like, try generating about 20,000 points and then use soundsc(x) to listen to it.
Answers: 3
Engineering, 04.07.2019 08:10
Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed
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Engineering, 04.07.2019 18:10
Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.
Answers: 3
Engineering, 04.07.2019 18:10
Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way
Answers: 2
Engineering, 04.07.2019 18:10
Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
Answers: 1
Sampling rate conversion rate changing is accomplished with a combination of upsampling (interpolati...
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