Quote:
...future research promises to improve the use of breathing therapies for stress by developing increasingly precise ways of measuring respiration outside the laboratory and integrating these measures with other physiological indicators of stress. One such technology operates via personal computer to detect pace of the user's breathing. The system uses two pairs of small microphones to detect respiratory activity, it eliminates environmental noise from the respiratory signal, and then streams the data to the personal computer with a latency of less than 5 milliseconds (Leskovsek et al,. 2011). The small non-invasive device requires no external power supply suggesting it could be incorporated into ecologically valid studies of stress or breathing-focused interventions in the workplace, or used to provide feedback during patients' real-world practice of breathing exercises...
Source: goo.gl/FKrQut (Page 277)
