- Philip Bate
- and Murray Campbell
The body of air inside a tubular wind instrument. When a note is sounded the air column is in a state of longitudinal vibration, i.e. subject to a cyclic succession of local compressions and rarefactions (see Acoustics, §IV, 2). The frequency of these disturbances determines the pitch of the sound heard; it is governed mainly by the form and dimensions of the air column (...