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・ Phonological history of English diphthongs
・ Phonological history of English high back vowels
・ Phonological history of English high front vowels
・ Phonological history of English low back vowels
・ Phonological history of English vowels
・ Phonological history of French
・ Phonological history of Old English
・ Phonological history of Scots
・ Phonological history of Spanish coronal fricatives
・ Phonological opacity
・ Phonological rule
・ Phonological word
・ Phonologie du Français Contemporain
・ Phonology
・ Phonology (journal)
Phonometer
・ Phonomotor
・ Phonomyia
・ Phonomyography
・ Phonon
・ Phonon (software)
・ Phonon 2555 Vision
・ Phonon Communications
・ Phonon drag
・ Phonon noise
・ Phonon scattering
・ Phonophobia
・ Phonophoresis
・ Phonorecord
・ Phonoscope Communications


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Phonometer : ウィキペディア英語版
Phonometer
A phonometer is an instrument invented by Thomas Edison for testing the force of the human voice in speaking. It consists chiefly of a mouthpiece and diaphragm. Behind the diaphragm is placed a delicate mechanism which operates a 15-inch flywheel by means of which a hole can be bored in an ordinary pine board.
==References==

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抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Phonometer」の詳細全文を読む



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