Windytan, the personal blog of Oona Räisänen, explores sound, signals, programming, music, and other technical curiosities. Through detailed, accessible articles, Räisänen investigates how everyday sounds work, combining listening, signal analysis, visualizations, and clear explanations. A featured article examines the “whoosh” heard as planes pass overhead, distinguishing the Doppler effect from interference caused by reflections off the ground.

It introduces concepts such as comb filtering and cepstral analysis, then uses calculations, diagrams, audio examples, and a simple acoustic simulation to explore the idea. The blog also connects sound science to familiar experiences, including waterfalls, traffic, thunder, and film sound effects, and invites readers to try listening experiments themselves. Its pages include a home page, a list of posts, an About and FAQ section, and Räisänen’s personal “nerd story.

” Windytan is an independent, curiosity-driven resource for readers interested in acoustics, audio, and the science behind signals, presented through thoughtful writing and interactive demonstrations