How do electronic instruments produce or modify musical sound?

Electronic instruments produce or modify musical sound through various electric and electronic means. These instruments generally fall into two categories: those that generate sound electronically and those that use electronic means to amplify sounds produced by traditional mechanical or acoustic methods.12

Sound Generation and Modification

Electronic instruments often utilize oscillators to create repetitive waveforms, which serve as the foundation for musical tones. In analog systems, these circuits produce electric waveforms analogous to those of acoustic instruments. Conversely, digital systems process series of numbers that are converted into waveforms, a method that has become standard for modern sound synthesis.345

Synthesizers allow musicians to "program" or "patch" various components to design specific timbres. Common elements include:4
* Mixers: To combine different waveforms.4
* Filters: To adjust the strength of specific overtones.4
* Amplifiers: To shape the loudness contours of the sound.4

Additionally, some instruments use sampling, where prerecorded sounds are stored digitally and retrieved during performance. Whether through analog hardware or digital computer processing, these technologies provide composers with extensive control over the creation and organization of sound.345