Phonocardiography with a smartphone

Thoms, Lars‐Jochen; Colicchia, Giuseppe; Girwidz, Raimund

doi:10.1088/1361-6552/aa51ec

Cited by 23 publications

(15 citation statements)

References 9 publications

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“…The device consists of a stethoscope chestpiece and a small-size microphone, which is connected to a computer sound card (see Figure 2). Note here that stethoscope acoustics are discussed briefly in [12]. The schematic of a simple phonocardiographic set-up (left) and a photo of the assembled stethoscope (right), which can be used to carry out phonocardiographic measurements.…”

Section: Experimental Set-upmentioning

confidence: 99%

Digital phonocardiographic experiments and signal processing in multidisciplinary fields of university education

Nagy¹,

Vadai²,

Gingl³

2017

Eur. J. Phys.

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During the embargo period (the 12 month period from the publication of the Version of Record of this article), the Accepted Manuscript is fully protected by copyright and cannot be reused or reposted elsewhere. As the Version of Record of this article is going to be / has been published on a subscription basis, this Accepted Manuscript is available for reuse under a CC BY-NC-ND 3.0 licence after the 12 month embargo period.

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Section: Experimental Set-upmentioning

confidence: 99%

Digital phonocardiographic experiments and signal processing in multidisciplinary fields of university education

Nagy¹,

Vadai²,

Gingl³

2017

Eur. J. Phys.

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“…This type of earphone-based device was also reported by Bhimani et al [4]. In addition, Thomas et al described recording of heart sounds by 3 other types of phonocardiographs based on mobile devices [5]. A pictorial comparison of available mobile phone-assisted phonocardiographs is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 65%

“…Hence, recorded audio files can be played or further analyzed on the receivers’ mobile phone or PC. This facility is also available for wire-connected devices [2,3,4,5]. In WiPCGh, as the Bluetooth headset is still a functional headset, the user can immediately play the audio file on the headset.…”

Section: Discussionmentioning

confidence: 99%

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Development of a Low-Cost Wireless Phonocardiograph With a Bluetooth Headset under Resource-Limited Conditions

Mondal

Mondal²,

Saha

2018

Medical Sciences

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Commercially available digital stethoscopes can be used as a phonocardiograph to record heart sounds. However, procuring a costly digital stethoscope may not be possible under resource-limited conditions. A low-cost, wire connected, and mobile phone-assisted phonocardiograph has been reported previously. The aim of this study was to develop a low-cost and wireless phonocardiograph for resource-limited settings. A Bluetooth headset was dismantled to find its microphone. A stethoscope ear knob was cut to make a small bell and it was attached to the microphone. This modified Bluetooth headset was capable of recording sounds while connected to a mobile device with audio recording application. The modified Bluetooth headset, mobile phone, and audio recording software can serve as a wireless phonocardiograph (WiPCGh). Heart sounds were successfully recorded with the help of the newly developed WiPCGh. The audio files were shared with a personal computer (PC) via Bluetooth. The wave form was analyzed in a PC-based audio editing application. First and second heart sounds with systolic and diastolic murmur were identified. WiPCGh can be utilized in recording heart sounds for academic and telemedicine purposes. However, the capability of WiPCGh in the diagnosis of cardiac diseases is yet to be explored in future studies.

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“…Photoplethysmography and phonocardiography can serve as starting points of exciting and inspiring experiments in education. The students can observe their own cardiac function and analyze it in various ways [14]- [20]. These experiments are particularly suitable for the universal implementation and illustration of the signal processing chain using Arduino systems.…”

Section: Methodsmentioning

confidence: 99%

Phonocardiography and Photoplethysmography With Simple Arduino Setups to Support Interdisciplinary STEM Education

et al. 2019

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Small computer board platforms, such as Arduino, Raspberry Pi, and micro: bit are very common, cheap, and useful tools to teach modern technology, coding, and experimenting in different disciplines at various levels. Due to the huge available information on websites, it is very easy to find a solution for almost any job and problem, therefore one may not be motivated to work out an own version, to study carefully, to understand the principles in-depth and to be creative. This is also one of the reasons why so high proportion of the examples employ technically inadequate methods, misleading concepts. These are rather serious problems concerning high-quality science, technology, engineering and mathematics (STEM) education. Although technology and available tools change rapidly, the basic principles remain the same, therefore education should focus on a better understanding of these. On the other hand, it is very important for the future's engineers, developers, and professionals to follow the correct methods, to be reliable, creative, and open to the more and more common interdisciplinary methodology. In this paper, we demonstrate this approach by investigating exciting interdisciplinary phonocardiography and photoplethysmography experiments and related electronics, data acquisition, and signal processing. In our work, we focus on the understanding and applying the correct methods, provide a detailed analysis of common pitfalls and leave room also for additional work. Students and teachers, lecturers can learn what to consider, pick what they find useful for their projects. It is also important to note, that the principles are valid for much other instrumentation and information processing jobs as well.

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Phonocardiography with a smartphone

Cited by 23 publications

References 9 publications

Digital phonocardiographic experiments and signal processing in multidisciplinary fields of university education

Digital phonocardiographic experiments and signal processing in multidisciplinary fields of university education

Development of a Low-Cost Wireless Phonocardiograph With a Bluetooth Headset under Resource-Limited Conditions

Phonocardiography and Photoplethysmography With Simple Arduino Setups to Support Interdisciplinary STEM Education

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