signal

2023 · 48 × 12 cells · half-block and box-drawing characters

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│            ▄█     ▀██▀ █        ▄█ █▄█      █│
│ ·  ·▄▄▄  · █·  ·  ·  · ▀█  ·  ▄█▀·  ▀▀ ·  · █│
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A sum of three sines sampled once per column and joined vertically, so the trace never breaks however steep it gets. The empty cells keep a dotted axis and a single-line frame closes the screen. Built the same way as overstrike, and a companion to the two hardware pieces, tape and mast.