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detrend using cubic splines
Yisroel · Jan 8, 2021 · plot , matlab , plotting

How can I detrend a time series using cubic spline interpolation? I would like to get this done over for eg., 0.2 year bins.  …

Sorting a cell of strings using a certain character position
Quincy · Jan 8, 2021 · matlab , signal , signal processing , array , cell array

I have a variable called var= vart=[{'Ice011_L_3of3m.mat''}; {'Ice011_P_1of3m.mat'} ;{'Ice011_P_2of3m.mat'}] We would need to sort the strings in the cell array using the 10th char…

Why can I not use findpeaks with this audio signal?
Santiago · Jan 8, 2021 · matlab , signal , signal processing

Honestly not used the software much at all I understand this may be a very simple problem. My aim is to spectrally analyse an audio signal and extract its modes (frequency peaks) t…

Filtering of 60 Hz signal - not working
Mackenzie · Jan 8, 2021 · matlab , signal , signal processing

Following the example "Remove the 60 Hz hum from a signal", I tried to run a butterworth filter in order to filter out multiples of 60 Hz (60, 120, 180, 240, etc.) from my signal. …

Product of Two matrix
Oliviawilliams02 · Jan 6, 2021 · matlab , matrix , simulink

Let W1 and W2 are complex  matrix of diamension N1 x Ns and Nr x N1 respectively. P = transpose(W1*W2), where N1 = N2 and N2 varies from 1 -18 via x axis. then how we will get the…

CUSUM and CUMSUM, cusum not found
Alexander · Jan 5, 2021 · matlab , signal , signal processing

I am using Matlab version 2015b. I can use "cumsum", but not "cusum". Is it because of different version?   >> help cusum cusum not found. Use the Help browser search field to sea…

analyse accelerometer and gyroscope data
Teagan · Jan 5, 2021 · matlab , matlab coder ,

Hi, I am using an IMU device to monitor animal behaviour. I am trying to use Matlab to analyse the data, however, I am unsure how to upload the data to use the signal analyzer app?…

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