Applying a pwelch in Javascript

• Complex.js

  1 227 4.1 JavaScript

  Complex.js is a com numbers library written in JavaScript

The background for this is that I'm using Node-RED to acquire data from a .csv file. Then, I am transferring it to a database where before that I would need to flip the time trace to the frequency domain via a pwelch. That way I can store the time trace and the frequency domain data. Currently what I am doing is using the Complex.js library found here: https://github.com/infusion/Complex.js. After that, I just use a very simple DTFT to get the frequency domain. However, I want to add some overlapping, window length and zero padding to my transformation, and this is where I think it would be easier to just a pwelch. I'm wondering if there is an simple way of implementing this. Otherwise I would have to have to look into a window library and create some sort of overlap using DTFT or another fourier transform technique.

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