Figure 2 | Scientific Reports

Figure 2

From: Aerosol emission and superemission during human speech increase with voice loudness

Figure 2

Particle emission rate/concentration while saying /ɑ/ at 8 different amplitudes, repeated 6 times at each amplitude. (A) Particle emission rate/concentration versus root mean square amplitude, Arms (arb. units) for a representative participant (F4). Solid line is the best linear fit, with correlation coefficient ρ = 0.932 and Pearson’s p value = 5.9 × 10−22. (B) Corresponding particle size distribution for the data presented in (A). (C) Aggregated particle emission rate/concentration versus root mean square amplitude, Arms (arb. units) for 10 participants, 5 males (denoted as M1 to M5) and 5 females (denoted as F1 to F5). There are 8 data points for each participant, each representing the average of repeating /ɑ/ six times at approximately the same voice amplitude (cf. Fig. 1). Solid line is a power law fit with exponent 1.004, correlation coefficient ρ = 0.774 and Pearson’s p value = 3.8 × 10−17.

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