Any of various instruments chiefly used to study or illustrate the relationship between the length of a vibrating string and the musical note it…

An acoustical instrument (invented by Cagniard de la Tour in 1819) for producing musical tones and used in numbering the vibrations in any note. Cf. s…

= siren, n. 7.

A particular instrument invented for giving a visual representation of sound.

= manometric capsule n. at manometric, adj. 2.

†(a) a flame manometer (obsolete); (b) a similar device for analysing sound vibrations in a pipe or other resonator, in which the vibrations of the…

a form of the siren, n. 7 in which a current of air is driven through a narrow slit against an undulatory curve on the periphery of a cylinder or…

(a) a device in an aeroplane for detecting or measuring pitching; (b) an instrument for measuring the pitch of sound.