Url
	https://omeka-s.grinnell.edu/s/MusicalInstruments/item/2949
Resource class
	wmi:MusicalInstrument
Title
	valve trombone
Subject
	423.233.2
Publisher
	possibly Gautrot (France) [gallery #1]
A. M. Botalli, Milan (Italy) [gallery #2]
Contributor
	Roger Vetter
Type
	cosmopolitan (Euro-American)
Format
	42 in. length [gallery #2]
Identifier
	6186
6161
Source
	Western Europe
Language
	EN
Coverage
	Austria
Alternative Title
	trombone à pistons
	Ventilposaune
	trombone a pistoni
Medium
	metal
Requires
	1
Is Part Of
	Grinnell College Music Instrument Collection
Spatial Coverage
	Europe
Provenance
	Vetter collection
Air cavity design for aerophones
	tubular - cylindrical with flaring open distal end
Source and direction of airstream
	player exhalation through mouth into air cavity; unidirectional
Energy transducer that activates sound for aerophones
	lip reed (player’s lips) placed over cup mouthpiece at end of tube
Means of modifying shape and dimensions of standing wave in air cavity for aerophones
	incremental lengthening with valve mechanism of air cavity in which the standing wave is active
Overblowing utilization in aerophones
	overblowing at consecutive partials
Pitch production in aerophones
	multiple - changing length of standing wave by adding tube length with valves or slide and by selecting partials through overblowing
Category of Instrument
	aerophone

--