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Card 213 of 9972026-08-22 issue

Observed arrival · 2026-08-22

DopplerSim 2.0

dopplersim.site Observed source
Editorial interest 74/100 Selection signal · not a rating of the site

A physics-based audio simulator that re-renders vehicle pass-by recordings under new speed, distance, timing, and emitter parameters.

Landing page captured for the 2026-08-22 issue.

Why it surfaced

DopplerSim first estimates an intrinsic source spectrum by undoing Doppler shift and geometric attenuation, then generates a new stochastic pass-by using exact retarded time. Its linked batch, multisource, spectrogram, and audio-comparison tools suggest a focused technical workspace rather than a generic audio toy.

A physics-based audio simulator that re-renders vehicle pass-by recordings under new speed, distance, timing, and emitter parameters.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

OpenPublic substance visible
PrettyNotable craft visible
NicheUnusually specific use

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dopplersim.site

Landing page observed 2026-08-22. The live site may have changed.