Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Sound Devices (hierarchy name)
5. sound devices (equipment)

Anotations

Scope note:

Any of various devices that create audible sound waves, usually electronically and/or digitally. These may incorporate oscillators, modulators, or amplifiers or all of these combined to create a synthesis.