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Mathieu NOE


Last seen: Today

Hutchinson

212 total contributions since 2015

Engineer - mechanices /ekectronics / signal processing

Average matlab user for 20 years now.
Professional Interests: signal processing, adaptive control, noise and vibration processing

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Answered
imwrite error for saving contents of a cell array in a for loop - "colourmap should have 3 columns"?
hello Lydia I'm not an expert in image processing , but my lille modified code seems to work a few things I know : no need ...

1 hour ago | 0

Answered
Combining multiple csv files in to one
hello this is an alternative that worked on my pc. There may be better coding options, I admit I had a bit of a hard time figu...

5 hours ago | 0

Answered
Checking if my program calculates what is supposed to.
hello yes your code needed some fix at least I believe I have fixed most recurrence issues in the loop now there are other ...

22 hours ago | 0

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Answered
Inputting Power Spectral Density into System Transfer Function to obtain Output PSD
hello if your input PSD is a numerical vector defined for a frequency vector freq, you simply have to do dot products like thi...

22 hours ago | 1

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Answered
How to Design a lowpass filter by cascading 10 sections of the first-order IIR lowpass filter
hello yes , conv is doing what your professor is asking , but this is the right way to use it (on the num and den part of your...

22 hours ago | 1

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Answered
how can I cut a wav file, then put it back into folder back into a folder? Bad loop?
hello Morgan would suggest this code instead (also avoids doing audioread every time you loop ) filename=('C:\Users\....\.....

23 hours ago | 0

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Answered
A loop that saves the data from the inner loop as next file
hello this is my suggestion - only one loop the code works whatever the dimensions of the data (tw1) you can also easily ch...

2 days ago | 1

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Answered
Perform FFTW of a song
hello I have exactly what you need ! you lucky man ! enjoy it

3 days ago | 0

Answered
Estimating a second order transfer function for a over damped second order system.
so this is the poor's man (no ID toolbox ) , frequency domain ID it may help you all the best clc,close,clear; File1 = f...

3 days ago | 0

Answered
Conditionally select rows and add to new table
hello so official answer below (modified original code) good luck for the future ! load('ddtable2.mat'); % ddtable2 date_...

3 days ago | 1

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Answered
When simulating the response to a specific input signal, the input data U must be a matrix with as many rows as samples in the time vector T, and as many columns as input channels.
hello this seems to work better : clear clc m1 = 69000; m2 = 65000; m3 = 126000; k1 = 8000; k2 = 8500; c1 = 5200; c2 ...

4 days ago | 0

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Answered
Saving tables as separate Excel file with different file names
hello , this is a code that will do the job and also vice versa but IMHO, it's better so save your different data in one ex...

4 days ago | 1

Answered
How to classify data from text file?
hello when you say "classify" I believe you meant access the data inside the txt file ? you can use readtable like this : ...

4 days ago | 0

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Answered
MATLAB program for counting total number of normal pulses in oscilloscope output
hello you need some kind of trigger to counts your pulses try this example - and set the threshold value to the correct leve...

4 days ago | 0

Answered
How can I go back to the initial condition and the script will read again from that condition
hello maybe you van do it this way each time you need to restart from the initial condition, call the IC function as shown he...

4 days ago | 0

Answered
finding peaks when axis are non-uniform
hi my 2 cent suggestion if x is not strictly increasing, resample your data on a vector that is 100% sure strictly increasing...

4 days ago | 0

Answered
fft finding oscillation frequency and strouhal number for lift
hello it's difficult to test your code if you share it only as a picture it looks ok but if you want to double check this is...

8 days ago | 0

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Answered
Move to the next row when reading the .csv file using csvread()
hello why making this so overly complicated ? m = csvread('data_points.csv') % gives : % % m = % % Columns 1 thr...

8 days ago | 0

Answered
How to estimate annual and semi-annual signals?
hello you're not stuck anymore below my code (the h parameters computation is the same as DFT coefficients) if you're stisfie...

8 days ago | 1

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Answered
Bring some signals to the same start value and end value
hello if you want all data to start and stop at the same values , you can do that : it works even sampling rates are different...

9 days ago | 0

Answered
How can I read multiple mat files and perform ttest2 function?
hello my single for loop code example enjoy n = 108;; % number of files s = 2; % create combination of 2 elements [comb...

9 days ago | 0

Answered
How can I extract the width of the following graph.
hello this piece of code will give you the angle . Demo based on a half sinus wave. you can easily apply it to your case x= l...

9 days ago | 1

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Answered
How to filter all the frequencies from the audio signal.
hello 2 gifts for you today (lucky man !) a code for general spectral analysis examples of digital filters you can use to el...

9 days ago | 0

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Answered
how to convert double .mat file to a column of numbers on excel
hello so this is a very basic code to load the data and store it as one column in an excel file. I am not sure to understand ...

9 days ago | 1

Answered
why 50hz can't be removed compeletely?
hello again I like simple solutions - see demo code below adapted to your case I hope 200 dB attenuation can be considered as ...

9 days ago | 0

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Answered
Digital Signal Processing Filters
hello 1/ this is obviously an IIR filter as it has a denominator, which means the past outputs are also in the recursive equat...

10 days ago | 1

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Answered
why 50hz can't be removed compeletely?
hello 2 gifts for you in the same day (you lucky ! ) a code for spectral analysis and time / frequency analysis a the end , ...

10 days ago | 0

Answered
How to read table from pdf
hello I don't know where the function extractFileText comes from So I'd did it my way : converted the pdf in excel file (on ...

10 days ago | 0

Answered
Fitting gaussian exponential to logscale
hello this a code that seems to work hope it helps I prefered to simplify as much the work of the optimizer , so first conv...

10 days ago | 1

Answered
How do I resample to have a uniform number of samples for each cycle of my signal?
hello Cai this little demo code for generating exactly 800 samples between each cycles load('maxamp.mat'); y = maxamp; sam...

11 days ago | 0

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