Observed arrival · 2026-09-20
morseformer, a Morse decoder that listens locally
An open-source Conformer and RNN-T tool that decodes amateur-radio Morse in real time on a CPU.
○Open
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Amateur-radio operators and speech-recognition builders
- Worth noticing
- The v0.6.4 audit covers 26 hand-keyed recordings and holds one operator entirely out of training.
Field notes
The decoder separates signal processing, acoustic modeling, and language-model assistance: a complex band-pass filter feeds an eight-layer Conformer, while CTC and RNN-T heads support alignment and streaming output. Its training pipeline combines synthetic conditions such as timing jitter, QSB, QRN, drift, and QRM with a forced-alignment-aware fine-tune on real hand-keyed audio. The page reports a 44.31% word error rate across its v0.6.4 audit clips.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue