noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Any device used for companding.
2. 2
   a system for improving the signal-to-noise ratio of a signal at a transmitter or recorder by first compressing the volume range of the signal and then restoring it to its original amplitude level at the receiving or reproducing apparatus. wordnet

Etymology

Blend of compressor + expander.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.