Doppler
JS Type · Jolana Sýkorová

A display grotesque built on extreme width contrast between Narrow and Extended cuts in two weights.
About
Doppler explores width as a central typographic variable by pairing Narrow and Extended versions of the same letterforms in Regular and Bold weights. The contrast between the compressed and stretched cuts gives designers a wide range of expressive options from a single coherent family. The name references the Doppler effect, where perceived frequency shifts depending on the observer's position.
Classification
A display sans serif built explicitly around width as its primary design axis. The family spans two extremes – Extended and Narrow – each in Regular and Bold, taking its conceptual cue from the Doppler effect's compression and expansion of waves.