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Medical Definition of Phonocardiography
1. Graphic registration of the heart sounds picked up as vibrations and transformed by a piezoelectric crystal microphone into a varying electrical output according to the stresses imposed by the sound waves. The electrical output is amplified by a stethograph amplifier and recorded by a device incorporated into the electrocardiograph or by a multichannel recording machine. (12 Dec 1998)
Lexicographical Neighbors of Phonocardiography
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