How do electronic instruments differ from acoustic instruments?

Electronic instruments differ from acoustic instruments primarily in how they generate, modify, and amplify sound.

• Sound Production: Acoustic instruments rely on mechanical means—such as vibrating strings, reeds, or air columns—and physical resonators like sounding boards to produce sound. In contrast, electronic instruments generate sound using electronic oscillators or by replacing traditional acoustic resonators with pickup systems, amplifiers, and loudspeakers.123
• Amplification and Modification: While acoustic instruments rely on their physical construction for resonance, electronic instruments use electronic components to strengthen and articulate waveforms. Many electronic instruments, such as the electric guitar, are essentially acoustic instruments that utilize electrical amplification.213
• Control and Flexibility: Electronic instruments offer unique capabilities for manipulating sound during a performance. Performers can use devices like filters, reverberation controls, and pedals to radically alter timbre in real time. Furthermore, some electronic instruments utilize novel interfaces—such as the theremin, which is played by moving hands through the air—or are designed to read encoded scores automatically, moving beyond the limitations of traditional live performance.32