how does IRASA work?

August 28, 2020

IRASA is a method for separating 1/f & oscillatory parts in power spectra. timeseries are up- and downsampled with non-integer sampling rates. resulting PSDs are then averaged across different rates, which leads to dispersion of oscillatory peaks (to some extent). pic.twitter.com/PVDLBsncF6
— Natalie Schaworonkow (@nschawor) August 28, 2020

illustration of Jeffress model

December 08, 2021

sound direction can be inferred from temporal differences of sound arrival at each ear. Jeffress model accomplishes this by mapping time into space with delay lines: spatially arranged units are activated depending on when inputs from both ears arrive simultaneously at the unit. pic.twitter.com/rgfHUowHH5
— Natalie Schaworonkow (@nschawor) December 8, 2021

how does a phase-locked loop work?

December 01, 2021

tracking phase with a phase-locked loop: phase of a signal is compared to a reference oscillation. depending on the low-pass filtered phase difference, the reference frequency is adjusted. filter properties determine whether phase can be tracked after sudden frequency jumps. pic.twitter.com/uAqjgTmyQZ
— Natalie Schaworonkow (@nschawor) November 30, 2021

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illustration of Jeffress model

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