Original Research

Visualization of change of sound characteristics on the level of the vocal cords

R. Luchsinger
South African Journal of Communication Disorders | Journal of the South African Speech and Hearing Association: Vol 20, No 1 | a406 | DOI: https://doi.org/10.4102/sajcd.v20i1.406 | © 2019 R. Luchsinger | This work is licensed under CC Attribution 4.0
Submitted: 16 November 2016 | Published: 31 December 1973

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R. Luchsinger, Zurich, Switzerland

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The construction is reported of an apparatus for producing short stroboscopic films, employing a new phase-shifting device. This apparatus provides the clinician with a reliable record of the mode of vibration of the vocal cords (in both the opening and closing phases) alongside a tape-recording of the voice. This makes it possible to correlate recordings of the frequency and intensity and transitions of the voice with a series of stroboscopic investigations.


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