Figure 1
From: Aerosol emission in professional singing of classical music

Normalized emission rates for all test conditions according to the legend. Data were averaged across all eight participants and all five replicants for each test condition. Marker positions are at the mean of the particle diameter of each size class on the linear scale (see “Methods” section). Regardless of the test condition, \(> 99\)% of all detected particles are \(\le 5\) µm. The terminology, piano, mezzo-forte, and forte describes singers’ loudness conditions, namely soft, medium, and loud phonation. (Figure created with matplotlib 3.2.1, http://matplotlib.org).