Data from: An improved and highly efficient geometry for facemasks

The dataset provided here is associated with the work "An improved and highly efficient geometry for facemasks," by Cappa et al, currently submitted for publication. This includes measurements made of the influence of a new cloth mask, designed originally for singing, on the emission of micron-scale aerosols from various expiratory activities (singing, speaking) and on inhalation of ambient particles. The dataset provided here includes *.txt files exported from an Aerodynamic Particle Sizer that contain time-series of the abundance of particles, by size (in particles per second), measured in the breath of study participants across experiments wherein people were either talking or singing. Also, *.txt files of the measured amplitude of the speech or singing associated with these activities are provided. Data are provided for conditions when people were not wearing any masks or were wearing the new singing masks. For wearing of singing masks, data are provided for participants singing while in various physical orientations with respect to the sampling instrument. Further details, including the file naming scheme, are provided in the associated Read Me file and the Usage Notes. All personally identifying information has been removed.