Noun: expander ik'span-du(r)
- An electronic device that increases the dynamic range of the audio signal
"Expanders are generally used to make quiet sounds even quieter by reducing the level of an audio signal that falls below a set threshold level"
- A device or substance used to increase volume or extend something
"They used an expander to enlarge the pipe opening"
Derived forms: expanders
Type of: electronic device
Encyclopedia: Expander