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A Littmann stethoscope. David Littmann (July 28, 1906 – January 1, 1981) was an American cardiologist and Harvard Medical School professor and researcher. [1] The name Littmann is well known in the medical field for the patented Littmann Stethoscope reputed for its acoustic performances for auscultation.
However, amplification of stethoscope contact artifacts, and component cutoffs (frequency response thresholds of electronic stethoscope microphones, pre-amps, amps, and speakers) limit electronically amplified stethoscopes' overall utility by amplifying mid-range sounds, while simultaneously attenuating high- and low- frequency range sounds.
Timothy M. Swager (born 1961) is an American Scientist and the John D. MacArthur Professor of Chemistry at the Massachusetts Institute of Technology.His research is at the interface of chemistry and materials science, with specific interests in carbon nanomaterials, polymers, and liquid crystals.
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 a more detailed study of murmurs and other heart sounds, for ...
Neumann KU 100 microphone used to record binaural sound. Binaural recording is a method of recording sound that uses two microphones, arranged with the intent to create a 3D stereo sound sensation for the listener of actually being in the room with the performers or instruments.
Wooden Pinard horn A U.S. Army Reserve nurse uses a Pinard horn in Uganda (2009).. A Pinard horn is a type of stethoscope used to listen to the heart rate of a fetus during pregnancy.
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