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. 2018 Apr-Jun;11(2):89–106.

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©Carol Davila University Press

This article is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use and redistribution provided that the original author and source are credited.

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Fig. 1 — 1a: Doctor René-Théophile-Hyacinthe Laennec, inventor of the stethoscope. 1b: The stethoscope is a system of transmission and amplification of sound by resonance. Its principle is rather simple. Using a specific interface (diaphragm or bell), a sound is picked up and then transmitted over a small distance to the user’s ears. Traditionally, the sound is transmitted in an aerial way via a conduit. 1c: The latest generation of stethoscopes is electronic and uses a microphone system and speakers to restore sounds (adapted from the chapter: Advances and Perspectives in the Field of Auscultation, with a Special Focus on the Contribution of New Intelligent Communicating Stethoscope Systems in Clinical Practice, in Teaching and Telemedicine. InTech 2012. http://dx.doi.org/10.5772/48402).