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Audio Pitch Manipulation Through Time
I am not certain what you want to do. One option could be the resample: function.

4 years ago | 0

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How to create a vertical offset line
Try something like this — zv = sort(rand(4,1)) % Define 'z' Val...

4 years ago | 0

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Define time axis interval for 100 samples
I am not certain what you want to plot. Perhaps — % sampling frequency (fs) is 6000 Hz fs1 = 6000; % I want to take 100 s...

4 years ago | 0

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Time + Acceleration Fourier transform into Amplitude + Frequency
The ‘Time’ values are not unique (they likely need an additional digit of precision) so they had to be processed by taking the m...

4 years ago | 0

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create a function from temperature data
Another option: Curve fitting to a sinusoidal function

4 years ago | 0

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Find the position of numbers in array
I am not certain what you are asking. Perhaps using the ismember (or ismembertol) function will do what you want.

4 years ago | 0

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How to remove the AWGN noise from data?
I would simply use a moving average filter, for example movmean, or choose one of the options in smoothdata, to eliminate normal...

4 years ago | 0

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Numeric array to serial datetime
Perhaps something like this — Feed{:,1} = datetime('29-Sep-2022'); Feed{:,2} = '14.45'; DT = Feed{:,1} + timeofday(datetime(...

4 years ago | 0

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Legend colours are different from the plot
Thank you for the ‘r’ anonymous function! I can now run your code. The code was plotting the contours as well as the vector...

4 years ago | 0

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Find the polar representation of (𝑖 − √3 )
Perhaps: phi = angle(1i - sqrt(3)) % Radian Angle Of Complex Number mag = abs(1i - sqrt(3)) ...

4 years ago | 0

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How to implement either a High/Low Pass filter on accelerometer data.
‘For my accelerometer, I set the output data rate to 50hz so the bandwidth would be 25hz and sampled at 10hz (10 times /sec) to ...

4 years ago | 0

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I have an equation that relies on previous values to get the next.
I am not certain how the ‘P’ vector enters into this. If: P1 = P(1) = 1 P2 = P(2) = 2 P3 = P(3) = 3 in this instance, then...

4 years ago | 0

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Please Help me, How to raise the quality of the attached figure after drawing it on Matlab
What do you want to do with it? F = open(websave('T','https://www.mathworks.com/matlabcentral/answers/uploaded_files/1138680/...

4 years ago | 0

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How to solve 2nd ODE equation in numerical and analytical method at same plot graph?
See my Answer in How to solve 2nd ODE equation in numerical and analytical method at same plot graph? and make the appropriate c...

4 years ago | 0

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How to solve 2nd ODE equation in numerical and analytical method at same plot graph?
Interesting problem! I was curious enough to do the entire simulation to see what the results are — syms x(t) x0 Dx0 T Y ...

4 years ago | 0

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Answered
fft of a signal
You need to normalise the fft result by the length of the signal: X_fft = fft(y1,nfft)/L; Otherwise, using my test signal, it...

4 years ago | 0

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Smoothing data with sgolay filter
The default order for the 'sgolay' option is 2 (quadratic), however the 'SmoothingFactor' controls the window length (framelen ...

4 years ago | 0

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How can I draw the transfer function spectra by matlab?
The ‘spectrum’ is the Bode plot: z = tf('z'); H = 5 / (1 + 2*cos(5)*z^-1 + z^-2); H.Variable = 'z^-1' figure bodeplot(H)...

4 years ago | 0

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Find the relaxation Time from data set
See my latest Comment in find fitting equation and parameters to fit damped oscillations curves from set of data.

4 years ago | 0

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sums up the same rounded numbers in 5-digit decimal arithmetic in n = 10, 9, 8, ..., 3, 2, 1
See the documentation for colon, : and go from there.

4 years ago | 0

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how to avoid getting 0 overlap on the pie chart?
The code was not returning the correct position vectors. I am not certain what you want to do. This repositions the ‘5%’ t...

4 years ago | 1

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contour() function plots with a solid background (and not a transparent background, which is desired)
Perhaps something like this — [X,Y,Z] = peaks(50); figure surf(X,Y,Z, 'EdgeColor','none') hold on contour3(X, Y, Z, 'Col...

4 years ago | 0

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How to plot bode?
We need to know more. If you have the Control System Toolbox (or the System Identification Toolbox, or both) licensed and ins...

4 years ago | 0

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The upsample function is not working R2022b
I can find two upsample functions in the online documentation, one in the Signal Processing Toolbox (that should work with your ...

4 years ago | 0

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Putting measurement unit and origin in plot
I am not exactly certain what you want, however the xlim and text functions would likely be appropriate.

4 years ago | 0

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Can anyone please tell me how to plot this graph?
Use the polarplot function. It should do evertything you want. For details see PolarAxes Properties and perhaps also Line Pr...

4 years ago | 1

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bode magnitude producing different plots for the same transfer function
The upper plot is plotted with a linear magnitude and the lower one is plotted with the magnitude in decibels.

4 years ago | 0

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Extract data points from bodemag plot
it would likely be easier to use the approach bode in Obtain Magnitude and Phase Data. (Remember to use the squeeze function wi...

4 years ago | 0

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Add axes x and y labels (or title) to a scatter plot, not using tbl notation
Delete the equal sign in the xlabel, ylabel, and title calls — A_full = rand(1,570); B_30_channels = rand(1,570); figure ...

4 years ago | 1

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Answered
Fix the random values
The rng function controls the seed. Example — rng(1) r1 = randi(9,1,10) rng(1) r2 = randi(9,1,10) There are a numbe...

4 years ago | 0

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