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Guglielmo Giambartolomei
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Use XSteam with vectors
Hello, I have to modify some pressure values with XSteam but I realized this code use only scalars. Example: XSteam(‘rho_pT’,1,...
etwa 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
How can I falsely increase the frequency of acquisition of a signal?
Hello, I have to confront a 50 Hz (20 ms of period) pressure signal with a 5 Hz temperature signal (200 ms of period) to calcu...
etwa 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
High-pass filter
Hello, I'm working on acceleration signals coming from an accelerometer that has a sensitivity change of 0% from 2 Hz to 10000 ...
etwa 3 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Maximum value and its position
Hello, I have an accelerometric signal and I would like to find the maximum value of the column of the acceleration values and...
etwa 3 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Extract a portion of an accelerometric signal around a maximum
Hello to everyone, I have an accelerometric signal (1st column : time ; 2nd column : acceleration values); I would like to fin...
fast 4 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
y-axis' unit of measure of a FFT and of a PSD
Hello everyone, I performed a FFT and a PSD of a accelerometric signal (g is the unit of measure). The code is the following: ...
fast 4 Jahre vor | 1 Antwort | 0
1
AntwortImporting big .ASC file
Dear Walter, I downloaded the 2020a version and it works! I have a question: now I have a n x 1 table (one column of the T table...
fast 4 Jahre vor | 0
Frage
Importing big .ASC file
Good morning, I searched on the web but I din't find anything useful for me. I have a big .ASC file that begins like this: Ti...
fast 4 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
Write a simple txt files made by strings and numbers
Good evening, I would like to write a simple .txt file with data I already have in my workspace. In particular I would like to ...
fast 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Change frequency axis on a scalogram
Goodmorning everyone, I plotted a scalogram of my signal (xa) in this way: cwt(detrend(xa),600); title('CWT of the accel...
etwa 6 Jahre vor | 0 Antworten | 0
0
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Band-pass Butterworth filter
Hello, I'm trying to make a band-pass Butterworth filter in order to filter a signal. With the help of Star Strider I already ma...
mehr als 7 Jahre vor | 1 Antwort | 0
1
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High-pass Butterworth filter and filtfilt
Hello everyone, I'm trying to high-filter a signal beacause when I perform a fft of the original signal I find a contribution at...
mehr als 7 Jahre vor | 1 Antwort | 0
1
AntwortFrage
How can I deduce velocity and displacement trends from an acceleration signals
Hello everyone, I have an acceleration signal from an accelerometer. I wrote a simple script in order to analyse this signal: I ...
mehr als 7 Jahre vor | 1 Antwort | 0
1
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Routine that recall various files and apply a script
Hello everyone, I have a question. I wrote a simple script that analyse a xlsx file. I have many of these files in a single dire...
mehr als 7 Jahre vor | 2 Antworten | 0
2
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Fft code; differences between scripts.
Goodmorning everyone, I want to perform a fft of an accelerometric signal and I'd like to know what's the best way to do that. W...
fast 8 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
Butterworth lowpass filter design code
Hello everyone, I wrote a simple code to analyze an accelerometric signal in the frequency domain and I saw that the magnitudes ...
fast 8 Jahre vor | 1 Antwort | 0
1
AntwortFrage
"Warning: Integer operands are required for colon operator when used as index" in fft
Hello everyone, I tried to write a script in order to perform a fft of an accelerometric signal. When I run the code the warning...
fast 8 Jahre vor | 1 Antwort | 0
1
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How may I perform an accelerometric signal analysis with MATLAB?
Goodmorning everyone, I was asked by the head of the research group to perform an analysis of an accelerometric signal and I wa...
fast 8 Jahre vor | 0 Antworten | 1
0
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Subtract the average time value by a signal
Hello everyone, I performed a FFT of an accelerometric signal and I found a peak at 0 Hz in the abs of the FFT. In order to remo...
etwa 8 Jahre vor | 1 Antwort | 0