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. 2014 Jan 15;16(1):e11. doi: 10.2196/jmir.2798

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©Marcin Masalski, Tomasz Grysiński, Tomasz Kręcicki. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 15.01.2014.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.jmir.org/, as well as this copyright and license information must be included.

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Calibration durations for all 7 calibration methods in series 1-3 (N=25). The horizontal line in each box represents the median, top and bottom box borders represent 75th and 25th percentiles, respectively; crosses represent outliers. MOD: modulated signal; 2TONE5: dual tone (5 dB); 2TONE2: dual tone (2 dB); ASC5: ascending (5-dB step); ACS2: ascending (2-dB step); BEK: Bekesy (continual); BEKM: Bekesy (modulated).