1) Medical test 
Phonomyography (PMG) (also known as acoustic myography, sound myography, vibromyography, and surface mechanomyogram) is a technique to measure the force of muscle contraction by recording the low frequency sounds created during muscular activity. Although less precise than the more traditional mechanomyography, it is considerably easier to set up....
The recording of the varying sounds made by contracting muscular tissue. ... Origin: phono-+ G. Mys, muscle, + graphe, drawing ... (05 Mar 2000) ... 
(fo″no-mi-og´rә-fe) the recording of sounds produced by muscle contraction.
Type: Term Pronunciation: fō′nō-mī-og′ră-fē Definitions: 1. The recording of the varying sounds made by contracting muscular tissue.
phonomyography The recording of the varying sounds made by contracting muscular tissue; usually supplementing visual oscillographic displays.