Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 17 (1910) > Annual Issue
Document Type
Research
Abstract
The tone variator is a closed-tube sound producing instrument. It consists of a cylindrical brass bottle, the bottom of which is a piston controlled by a delicate cog-wheel mechanism. By means of this the depth of the bottle may be readily changed, thus varying the pitch. The sound is produced by a stream of air directed across the mouth of the bottle through a tube set at the proper angle. A pointer attached to the piston’s setting gear indicates the pitch in terms of vibrations per second.
Publication Date
1910
Journal Title
Proceedings of the Iowa Academy of Science
Volume
17
Issue
1
First Page
195
Last Page
197
Copyright
©1910 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Sylvester, R. H.
(1910)
"Some Standardizing Tests of Stern's Tone Variator,"
Proceedings of the Iowa Academy of Science, 17(1), 195-197.
Available at:
https://scholarworks.uni.edu/pias/vol17/iss1/27