Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Tools and Equipment (hierarchy name)
5. equipment
6. [equipment by process]
7. [equipment for transmitting and reproducing sound]
8. audio equipment
9. microphones

Anotations

Scope note:

Microphones that respond to the air velocity rather than the air pressure of sound waves. This is accomplished via a ribbon of corrugated aluminum held between two magnets. Ribbon microphones were used extensively in radio and television broadcasting during the mid-20th century due to their broad dynamic range.