Voltage control sources
Continuously varying electrical signals are passed to a loudspeaker to produce sound. The electrical signals are generated using electronic circuitry. Configurations containing analogue fully electronic devices used to produce, process and communicate electronic sound signals and/or sequences of signals. These devices use voltage control sources. Voltages are controlled by human interface devices, keyboards, foot switches, sensors, wheels or touchpads.
Voltage control sources - controleers and interfaces
Hornbostel - Sachs