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)
6. [sound devices by acoustical characteristics]
7. idiophones
8. friction idiophones

Anotations

Scope note:

Experimental musical instruments in the friction idiophone family invented by Hans Reichel ca. 1980s. These are made of wood, and consist of a 'tongue' that is fixed in a block that contains one or more contact microphones. The tongue is bowed with a conventional stringed instrument bow while simultaneously pressing down on the the tongue with another piece of shaped wood called a 'dax,' thus achieving various tonalities or notes. The tongue can also be excited by plucking. The shape of the tongue, and the type of wood also influence the sound.