Abstract
Phonocardiography is routinely used in clinical practice as a tool for detecting heart diseases by listening and analyzing heart sounds (HS). Several electronic phonocardiograph (PCG) devices are commercially available, sometimes including a companion software for personal computers or smartphones. In this study, the design, implementation, and pilot testing of a smartphone-based digital and affordable PCG is addressed. The proposed system incorporates an electret microphone, analog signal conditioning, analog-to-digital conversion, and Bluetooth wireless transmission to a custom designed mobile application (app) for Android devices. The case and acoustic bell was designed in 3D, satisfying the dimensions of the air cavity stipulated in the literature. The app oversaw the real-time recording, digital signal processing and displaying of the PCG signals. The results of a series of pilot tests performed to the PCG, including tests with Gaussian white noise, pure tones, and simulated heart sounds, are presented, together with an example of a PCG signal recorded at the mitral auscultation focus of a healthy volunteer. The preliminary results pointed out to the feasibility of implementing the low-cost, custom designed, smartphone-based PCG system, but more exhaustive tests and real data acquisitions are required.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
World Health Organization, The top 10 causes of death. https://www.who.int/news-room/fact-sheets/detail/the-top-10-causes-of-death. Accessed 14 June 2022
Leng, S., Tan, R.S., Chai, K.T.C., Wang, C., Ghista, D., Zhong, L.: The electronic stethoscope. Biomed. Eng. Online 14(1), 1–37 (2015)
Selbekk, T., et al.: Ultrasound imaging in neurosurgery: approaches to minimize surgically induced image artefacts for improved resection control. Acta Neurochir. 155(6), 973–980 (2013)
Abella, M., Formolo, J., Penney, D.G.: Comparison of acoustic properties of six popular stethoscopes. J. Acoust. Soc. Am. 91(4), 2224–2228 (1992)
Kraman, S.S., Wodicka, G.R., Oh., Y., Pasterkamp, H.: Measurement of respiratory acoustic signals: effect of microphone air cavity width, shape, and venting. Chest 108(4), 1004–1008 (1995)
Nam, Y., Kong, Y., Reyes, B., Reljin, N., Chon, K.H.: Monitoring of heart and breathing rates using dual cameras on a smartphone. PLoS ONE 11(3), e0151013 (2016)
Beck, R., Rosenhouse, G., Mahagnah, M., Chow, R.M., Cugell, D.W., Gavriely, N.: Measurements and theory of normal tracheal breath sounds. Ann. Biomed. Eng. 33(10), 1344–1351 (2005)
Reyes, B.A., Charleston-Villalobos, S., González-Camarena, R., Aljama-Corrales, T.: Assessment of time–frequency representation techniques for thoracic sounds analysis. Comput. Methods Program. Biomed. 114(3), 276–290 (2014)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2023 The Author(s), under exclusive license to Springer Nature Switzerland AG
About this paper
Cite this paper
Ibarra-Garnica, A.R., Alexander Reyes, B. (2023). Design and Implementation of a Smartphone-Based Digital Phonocardiograph with Wireless Transmission Capabilities. In: Trujillo-Romero, C.J., et al. XLV Mexican Conference on Biomedical Engineering. CNIB 2022. IFMBE Proceedings, vol 86. Springer, Cham. https://doi.org/10.1007/978-3-031-18256-3_55
Download citation
DOI: https://doi.org/10.1007/978-3-031-18256-3_55
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-031-18255-6
Online ISBN: 978-3-031-18256-3
eBook Packages: EngineeringEngineering (R0)