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sphygmophonic
sphygmophonic adj. 
/ˌsfɪɡməˈfəʊnɪk/,
Brit. /ˌsfɪɡməˈfɒnɪk/
, /ˌsfɪɡməˈfɒnɪk//ˌsfɪɡməˈfəʊnɪk/U.S. /ˌsfɪɡməˈfɑnɪk/
pertaining to the sound of pulsations./ˌsfɪɡməˈfɑnɪk/ΘΠ
the world > physical sensation > hearing and noise > audibility > sound magnification or reproduction > [adjective] > other amplifying devices
polyacoustic1684
megaphonic1881
sphygmophonic1881
pantelephonic1887
1881 Med. Temp. Jrnl. 13 75 The pulse is sixty-eight, and the three sphygmophonic indications are present.
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