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Music & Acoustics

Spectrogram of a Chirp

frequency rising with time
Spectrogram of a Chirp

A time-frequency heat map of a rising chirp: the bright diagonal ridge is instantaneous frequency climbing as the sweep rate increases.

Computed & rendered in pure C# on the frozen OnlyCSharp 1.8 library — animation baked to GIF with the library's own Gif encoder (no GPU, no ffmpeg, no external packages).