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. Author manuscript; available in PMC: 2017 Jul 1.
Published in final edited form as: J Voice. 2015 Jul 15;30(4):434–442. doi: 10.1016/j.jvoice.2015.05.010

Figure 4.

Figure 4

Means and 95% confidence intervals of voice Sound Pressure Level (dBA) at 1 meter in quasi-anechoic conditions. Values are presented by accompaniment level per group (0: non-professional; 1: professional).