Figure 7
Particle emission per mg water emission during flute (a) or oboe (b) playing vs. during speaking. Gray lines indicate equal particles-per-water ratios for both tasks. Oboe playing tends to produce larger particles-per-water ratios than speaking while flute playing does not seem to: In diagram (b) more ellipses are located above the grey line than on or below it. The ellipses above the line indicate higher ratios from instrument playing than from speaking. In diagram (a) the distribution of ellipses with respect to the grey line is almost neutral. F19 and F20 are exceptional dry high emitters.
