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  • Title: [Automated body plethysmography of respiration and voice efficiency (author's transl)].
    Author: Moser M, Kittel G.
    Journal: HNO; 1979 Mar; 27(3):100-2. PubMed ID: 429215.
    Abstract:
    Efficiency of voice (EV) is understood as the ratio of gained acoustic power to respiratory power during phonation. A fully automatic computer programmed to calculate the EV and the subglottic pressures via body plethysmography is described. The EV ranges from 0.5 x 10(-5) to 120 x 10(-5). The relationship between EV and sound pressure is demonstrated. The results were reproducable.
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