So next time you're running a Fourier transform or analyzing frequency components, give a little nod to Schuster. 👏

#DataScience #SignalProcessing #TimeSeries #SpectralAnalysis #FourierTransform #TechHistory #Analytics

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Optical Spectrum Analyzer: An Invaluable Tool for Fiber Optic Communication Systems

An optical spectrum analyzer (OSA) is a device used to measure the power level of light in optical fibers as a function of wavelength. It is an essential tool for testing and troubleshooting fiber optic communication systems and components.

Optical Spectrum Analyzer - https://prateikcmi.hashnode.dev/the-incredible-utility-of-optical-spectrum-analyzers-in-testing-fiber-optic-communication-systems

#OpticalSpectrumAnalyzer #FiberOpticNetwork #WavelengthMeasurement #SpectralAnalysis #CoherentMarketInsights

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We thus decided to use the General Distance Measure to compute pairwise similarities between our 172 subjects, and obtained a matrix, which as math savy people know, is also the description of a network (an "adjacency matrix" for a "weighted undirected graph").
The problem was then to find cliques, communities or clusters of similar patients in such a network, and we used spectral clustering.
Spectral clustering is a family of techniques that use spectra of matrices describing networks, i.e. use eigenvalues of matrices to understand the structure of those networks.

#spectralanalysis #spectralclustering #clustering #neuroscience

@anja interesting read though people obviously don't know what white noise is. Given the story, they could say "ambient sounds" or something like that, but from my dive into this, these podcasts are mostly a combination of pink and red noise (e.g. ocean waves). White noise has no pattern, reddened noises are autocorrelated and have ups and downs.
🤓 #spectralanalysis
https://www.bloomberg.com/news/newsletters/2023-08-17/white-noise-podcasters-are-costing-spotify-38-million-a-year?utm_medium=email&utm_source=newsletter&utm_term=230817&utm_campaign=soundbite#xj4y7vzkg