companding
Sign in to savethumb|upright=1.5|A signal before (top) and after μ-law algorithm|μ-law compression (bottom)
Wikidata facts
Show 1 more fact
- Commons category
- Companding
Sources (3)
via Wikidata · CC0
~5 min read
Article
5 sectionsContents
- How it works
- Applications
- History
- References
- External links
thumb|upright=1.5|A signal before (top) and after μ-law algorithm|μ-law compression (bottom)
In telecommunications and signal processing, companding (occasionally called compansion) is a method of mitigating the detrimental effects of a channel with limited dynamic range. The name is a portmanteau of the words compressing and expanding, which are the functions of a compander at the transmitting and receiving ends, respectively. The use of companding allows signals with a large dynamic range to be transmitted over facilities that have a smaller dynamic range capability. Companding is employed in telephony and other audio applications such as professional wireless microphones and analog recording.