Recording Heart Sounds
Using electronic stethoscopes, it is possible to record heart sounds via direct output to an external recording device, such as a laptop or MP3 recorder. The same connection can be used to listen to the previously-recorded auscultation through the stethoscope headphones, allowing for more detailed study of murmurs and other heart sounds, for general research as well as evaluation of a particular patient's condition.
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MThe ACCUSING SPIRIT which flew up to heaven’s chancery with the oath, blush’d as he gave it in;—and the RECORDING ANGEL as he wrote it down, dropp’d a tear upon the word, and blotted it out for ever.”
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—Charles Sanders Peirce (1839–1914)