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single sided magnitude spectrum tremor analysis

✓ Published0🌍 Public
DDonald Bagwell
Last edited Aug 10, 2024
Created on Aug 10, 2024

This visualization displays the single-sided magnitude spectrum of a tremor analysis signal, plotting frequency in Hertz against magnitude in decibels. The chart uses a logarithmic x-axis scale to show the frequency distribution of heart rate data sampled at 62.5 Hz. The code calculates a Fast Fourier Transform using a custom FFT class and visualizes the resulting magnitudes with D3.js, including axes and a line path. The visualization uses a custom `viz` function that applies log and linear scaling to map data points.

AI-generated description

Overview Time to dabble with the infamous FFT in javascript. Starting with a simple script to generate sine waves for testing.

'Double-sided Magnitude spectrum'

Only a couple of acknowledgements

Discrete Fourier Transform - Simple Step by Step https://www.youtube.com/watch?v=mkGsMWi_j4Q

Understanding the Discrete Fourier Transform and the FFT https://www.youtube.com/watch?v=QmgJmh2I3Fw&t=3s

MIT Licensed

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