Salo 3310 — Full-Rate GSM Codec

The restorer's note

This is the voice of a 1994 mobile call — the codec that made distance vanish and, in the same stroke, gave it that half-swallowed, faintly underwater grain. The restored unit came off a decommissioned Nordic carrier's test bench, its panel still tacky with a shift sticker. The watery quality is the RPE-LTP algorithm working exactly as designed. We have not clarified it; clarity was never the assignment.

Restored 2025 from 1994 hardware.