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. 2011 Dec 14;6(12):e28317. doi: 10.1371/journal.pone.0028317

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Assaneo et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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We evaluate the similitude of sounds with respect to the knock (solid line) and click (dotted line) sounds. Participants graded the audio files using a scale from 1 (poor or no association) to 10 (perfect identification). The left panel summarizes the responses of 20 participants to 7 synthetic sounds: the 5 co-articulated , using the parameters of (figure 3 and table 2) modulated by an experimental envelope (see Methods). The other 2 sounds were generated using the best vocal tracts for the knock and click sounds, modulated by the same envelope (points in light gray). The stronger associations with the click and knock sounds are and respectively. The best vocal tracts performed better than the consonants. In the right panel, we show the results of the experiment for 20 subjects using experimental isolated fricatives . The trend is the same as before, but grades are systematically higher.

Inline graphic — We evaluate the similitude of sounds with respect to the knock (solid line) and click (dotted line) sounds. Participants graded the audio files using a scale from 1 (poor or no association) to 10 (perfect identification). The left panel summarizes the responses of 20 participants to 7 synthetic sounds: the 5 co-articulated , using the parameters of (figure 3 and table 2) modulated by an experimental envelope (see Methods). The other 2 sounds were generated using the best vocal tracts for the knock and click sounds, modulated by the same envelope (points in light gray). The stronger associations with the click and knock sounds are and respectively. The best vocal tracts performed better than the consonants. In the right panel, we show the results of the experiment for 20 subjects using experimental isolated fricatives . The trend is the same as before, but grades are systematically higher.