The sound waves from a phonograph record of a Tlingit Indian's speech were photographed on the Metfessel strobo-photograph. The curves on the strobo-photograph film were traced onto a reduced musical-scale chart by means of an especially designed transcribing machine. The analysis, which was limited to the frequency of vibration and duration of the sounds, was made under two main headings: (1) intervals, and (2) intonations.
Proceedings of the Iowa Academy of Science
©1930 Iowa Academy of Science, Inc.
Miller, Ray E.
"A Sound Wave Analysis of Tlingit Speech,"
Proceedings of the Iowa Academy of Science, 37(1), 351-355.
Available at: https://scholarworks.uni.edu/pias/vol37/iss1/95