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. Author manuscript; available in PMC: 2020 Jan 1.
Published in final edited form as: IEEE Rev Biomed Eng. 2018 Oct 29;12:221–239. doi: 10.1109/RBME.2018.2874353

Figure 1:

Figure 1:

Summary of the different types of acoustic signals for pulmonary disease diagnosis. This includes both internal sounds, such as breath sounds, and external stimuli, such as percussion.