True or False a. An FFT can be computed using only real values, yet there will...
True or False
a. An FFT can be computed using only real values, yet there will be aliasing of the frequency spectrum
b. An FFT applied to time varying values outputs a frequency spectrum
c. The FFT is a discrete Fourier transform because the input is discrete samples taken at uneven intervals
Homework Answers
Answer:-------
a. An FFT can be computed using only real values, yet there will be
aliasing of the frequency spectrum. ==>
False
b. An FFT applied to time varying values outputs a frequency spectrum. ==> True
c. The FFT is a discrete Fourier transform because the input is discrete samples taken at uneven intervals. ==> True
Add Answer to:
True or False
a. An FFT can be computed using only real values, yet there will...
1. (15 points) Review Carefully read each statement below and identify it as True or False...
1. (15 points) Review Carefully read each statement below and identify it as True or False and, for each answer, explain your reasoning briefly in 1-2 sentences. 1. A 100KHz tone (i.e., sinusoid) is input to an LTI system. The frequency spectrum of the output signal may include components at integer multiples of 100KHz. True or False? Why? 2. The phase of the Fourier transform of a real-valued signal with odd symmetry will always be +90 deg. True or False?...
Can you please help me answer Task 2.b? Please show all work. fs=44100; no_pts=8192; t=([0:no_pts-1]')/fs; y1=sin(2...
Can you please help me answer Task 2.b?
Please show all work.
fs=44100; no_pts=8192;
t=([0:no_pts-1]')/fs;
y1=sin(2*pi*1000*t);
figure;
plot(t,y1);
xlabel('t (second)')
ylabel('y(t)')
axis([0,.004,-1.2,1.2]) % constrain axis so you can actually see
the wave
sound(y1,fs); % play sound using windows driver.
%%
% Check the frequency domain signal. fr is the frequency vector and
f1 is the magnitude of F{y1}.
fr=([0:no_pts-1]')/no_pts*fs; %in Hz
fr=fr(1:no_pts/2); % single-sided spectrum
f1=abs(fft(y1)); % compute fft
f1=f1(1:no_pts/2)/fs;
%%
% F is the continuous time Fourier. (See derivation...
3. True or False for each question 4. (Yes or No) because.. A) There are at...
3. True or False for each question
4. (Yes or No) because..
A) There are at least 10 successes and 10 failures in the
sample
B) There are at least 20 success and failures in the sample
C) The population has more 10 success and 10 failures
D) The 1,259 is not large enough for the central limit theorem
to apply
5. (Yes or No) because...
A) The confidence interval includes reasonable values for the
parameter that are below 50%...
Study the provided MATLAB programs entitled fft_spectrum, plot_fft_spectrum, and test_fft_spectrum. Using the program test_fft_spectrum, plot the...
Study the provided MATLAB programs entitled fft_spectrum, plot_fft_spectrum, and test_fft_spectrum. Using the program test_fft_spectrum, plot the approximate magnitude and phase spectra of the functions given in problem 3.2-1. Adjust your time axis so that the frequency plots are scaled conveniently, and important features of the time and frequency plots are clearly visible. This can be done by experimenting with the values of N, tmin, and tmax. And the 3.2-1 problems are: (a) pi(t/3) (b) Delta (3x/100) (c) pi (t-5/4) (d)...
7:35 exam 2.docx Not saved yet 17.) True of False. Microwaves have higher frequency thus shorter...
7:35 exam 2.docx Not saved yet 17.) True of False. Microwaves have higher frequency thus shorter wavelengths than IR heat radiation. 18.) Electromagnetic radiation is produced when (a) a vacuum is created (b)charges move (c)electric fields oscillate (d)magnetic fields are constant 19.) Transverse waves travel by (a)up and down propagation (b) compressions (c)sound waves (d)electromagnetic waves 20.) True or False. Electromagnetic rays need only air to travel. 21.) Sound waves are examples of what wave format? (a)transverse (b)orthogonal (c)longitudinal (d)none...
True or False: Companies which would like to avoid unionization can hire only employees who pledge...
True or False: Companies which would like to avoid unionization can hire only employees who pledge to refrain from union membership. True or False: The worker must be part of the designated bargaining unit in order to vote in the election. The underlying principle for the NLRB’s determination of an appropriate bargaining unit is that only employees who have ________ can be appropriately grouped in that unit. the same number of years of total work experience similar wages, hours, and...
I will upvote if u will solve What u need? DFT can also be obtained using matrix multiplication. Let X[r] show the transformed values and x[n] show the original signal. Using the analysis equa...
I will upvote if u will solve
What u need?
DFT can also be obtained using matrix multiplication. Let X[r] show the transformed values and x[n] show the original signal. Using the analysis equation: Using matrix multiplication, this operation can be written as x[O X[1 1 e(2m/N) e-K4n/N) x12] [N-1]] e-j(2(N-1)T/N)e-j(4(N-1)m/N) Instead of huilt-in EFT function use matrix multinlication to solve 3th auestion [ 1 e-/(2(N-1)(N-1)T/N)]Le[N-1] DFT is an extension of DTFT in which frequency is discretized to a finite...
Name: True/False & Multiple Choice (2 points each) (True / False ) 2 A char literal...
Name: True/False & Multiple Choice (2 points each) (True / False ) 2 A char literal '2', a string literal "2", and the numeric literal 2 are identical and stored the same way though they are different types. 3 Since comments do not affect the program execution, you don't need to have it at all. 4. After the following statements are executed, the value of the variable rem is 3. 1. A preprocessor directive line starts with a pound sign...
True or False/Short Answer Questions The ramp response of a 1st order system can be oscillating....
True or False/Short Answer Questions The ramp response of a 1st order system can be oscillating. Using the state space representation, the number of rows in the matrix B is equal to the number of outputs. Closed-Loop Control systems are insensitive to external disturbances. Two physically different systems must be modeled by two different transfer functions. For an LTI system, the time derivative of the unit impulse response is the unit ramp response. If a system has two real and...
Module 2 - Quiz 2 TRUE OR FALSE T F 1. Only digital signals can be...
Module 2 - Quiz 2 TRUE OR FALSE T F 1. Only digital signals can be used to convey information in the communications environment, T F 2. The greater the bandwidth of the signal the greater its information carrying capacity T F 3. The transmission media that are used to convey information can be classified as guided or unguided. T F 4. Twisted pair may only be used to transmit analog and digital signals. T F S. Both analog and...
1. (15 points) Review Carefully read each statement below and identify it as True or False and, for each answer, explain your reasoning briefly in 1-2 sentences. 1. A 100KHz tone (i.e., sinusoid) is input to an LTI system. The frequency spectrum of the output signal may include components at integer multiples of 100KHz. True or False? Why? 2. The phase of the Fourier transform of a real-valued signal with odd symmetry will always be +90 deg. True or False?...
Can you please help me answer Task 2.b?
Please show all work.
fs=44100; no_pts=8192;
t=([0:no_pts-1]')/fs;
y1=sin(2*pi*1000*t);
figure;
plot(t,y1);
xlabel('t (second)')
ylabel('y(t)')
axis([0,.004,-1.2,1.2]) % constrain axis so you can actually see
the wave
sound(y1,fs); % play sound using windows driver.
%%
% Check the frequency domain signal. fr is the frequency vector and
f1 is the magnitude of F{y1}.
fr=([0:no_pts-1]')/no_pts*fs; %in Hz
fr=fr(1:no_pts/2); % single-sided spectrum
f1=abs(fft(y1)); % compute fft
f1=f1(1:no_pts/2)/fs;
%%
% F is the continuous time Fourier. (See derivation...
3. True or False for each question
4. (Yes or No) because..
A) There are at least 10 successes and 10 failures in the
sample
B) There are at least 20 success and failures in the sample
C) The population has more 10 success and 10 failures
D) The 1,259 is not large enough for the central limit theorem
to apply
5. (Yes or No) because...
A) The confidence interval includes reasonable values for the
parameter that are below 50%...
7:35 exam 2.docx Not saved yet 17.) True of False. Microwaves have higher frequency thus shorter wavelengths than IR heat radiation. 18.) Electromagnetic radiation is produced when (a) a vacuum is created (b)charges move (c)electric fields oscillate (d)magnetic fields are constant 19.) Transverse waves travel by (a)up and down propagation (b) compressions (c)sound waves (d)electromagnetic waves 20.) True or False. Electromagnetic rays need only air to travel. 21.) Sound waves are examples of what wave format? (a)transverse (b)orthogonal (c)longitudinal (d)none...
I will upvote if u will solve
What u need?
DFT can also be obtained using matrix multiplication. Let X[r] show the transformed values and x[n] show the original signal. Using the analysis equation: Using matrix multiplication, this operation can be written as x[O X[1 1 e(2m/N) e-K4n/N) x12] [N-1]] e-j(2(N-1)T/N)e-j(4(N-1)m/N) Instead of huilt-in EFT function use matrix multinlication to solve 3th auestion [ 1 e-/(2(N-1)(N-1)T/N)]Le[N-1] DFT is an extension of DTFT in which frequency is discretized to a finite...
Name: True/False & Multiple Choice (2 points each) (True / False ) 2 A char literal '2', a string literal "2", and the numeric literal 2 are identical and stored the same way though they are different types. 3 Since comments do not affect the program execution, you don't need to have it at all. 4. After the following statements are executed, the value of the variable rem is 3. 1. A preprocessor directive line starts with a pound sign...
Module 2 - Quiz 2 TRUE OR FALSE T F 1. Only digital signals can be used to convey information in the communications environment, T F 2. The greater the bandwidth of the signal the greater its information carrying capacity T F 3. The transmission media that are used to convey information can be classified as guided or unguided. T F 4. Twisted pair may only be used to transmit analog and digital signals. T F S. Both analog and...
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