Editing Sound module (section)

{{short description|Externally controlled electronic musical instrument}}
{{Refimprove|date=June 2018}}

[[Image:Triton rack adjusted.jpg|thumb|330px|Korg Triton rack-mountable sound module.]]

A '''sound module''' is an [[electronic musical instrument]] without a human-playable interface such as a [[piano]]-style [[musical keyboard]]. Sound modules have to be operated using an externally connected device, which is often a [[MIDI controller]], of which the most common type is the musical keyboard. Another common way of controlling a sound module is through a [[Music sequencer|sequencer]], which is computer hardware or software designed to record and playback control information for sound-generating hardware. Connections between sound modules, controllers, and sequencers are generally made with [[MIDI]] (Musical Instrument Digital Interface), which is a standardized interface designed for this purpose.

Sound modules are often [[rack-mountable]], but are also produced in table-top [[Form factor (design)|form factor]], particularly when the intended user is a [[DJ]] or [[record producer]]. The height of a sound module is often described in [[rack unit]]s. Small sound modules are mostly 1U in height, the larger models a multiplication e.g. 2U or 3U. Despite their name, most sound modules do not produce any audible sound until their output is plugged into a [[keyboard amplifier]] or a [[PA system]]. 

There are a wide variety of sound modules, ranging from more generalist modules that can be used for a number of controllers or instruments (e.g., a rack mount synthesizer with hundreds of commonly used presets of instrument sounds, from piano and organ to synth brass and string pads) to specialized modules designed for use with wind controllers, electronic drum pads, [[digital accordion]]s, or to produce [[clonewheel organ]] sounds. 

Hardware sound modules have largely been replaced by [[software synthesizer]]s, due to the increased speed and processing power of computers and their decrease in price. In 2024, ‘’Music Radar’’ noted that synth modules are “an entire category in music production that has pretty much fallen off the face of the earth in recent years”, because “as prices for hardware synths began to fall while their versatility rose and computers began to grow more powerful, the allure of spending three or four-figure sums on a 19” unit of largely fixed sounds diminished”, to the point that in 2024, the “only sound module on the market is the…Roland Integra-7”.
<ref>{{cite web |url= https://www.musicradar.com/news/5-ways-music-gear-improved
|title="We've never had it so easy": 5 ways music gear has improved over the years... and 5 it hasn't
 |last=Cartledge |first=Chris |date= 9 July 2024|website=www.musicradar.com |publisher=Music Radar |access-date= 13 July 2024|quote=}}</ref>
Nevertheless, some [[DJ]]s, [[Electronic dance music|EDM]] musicians and [[record producer]]s continue to use vintage 1980s sound modules like the [[Yamaha TX16W]] (1988) for their unique, retro sound.