Electronic stethoscope prototype with adaptive noise cancellation

Jatupaiboon, Noppadon; Pan-ngum, Setha; Israsena, Pasin

doi:10.1109/ictke.2010.5692909

Cited by 22 publications

(13 citation statements)

References 4 publications

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“…Recording of data (vibration occur when stethoscope is placed on human body) by using stethoscope and stored in memory, used for further analysis [13][14] [16]. Recorded signal is send to authorization center by using electronic mail, where expert doctor use various software to plot these signal for analysis.…”

Section: Analysis Of Signal After Recordingmentioning

confidence: 99%

Design of Electronic Stethoscope and Heart Rate Monitor for Remote Area Application

Prasad¹,

Phade²

2016

IJCA

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Developing countries like India, where doctor to patient ratio is around 1:1700, as large number of population lives in villages and remotely located area. Health checkup of such a large population is very challenging for their government due to less number of qualified doctors, highly qualified doctor refuges to work in villages and remotely placed areas. This paper proposes a new idea by which an electronic stethoscope is used to provide health checkup of such large population, by creating a public health center (PHC) in every village or combining more small villages to one PHC and connecting it with authorized center, authorized center monitors more than fifteen PHC. Recording of human organ signal by using stethoscope and transmitted to the authorized center using electronic mail can reduce the requirement of large number of doctors.

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Section: Analysis Of Signal After Recordingmentioning

confidence: 99%

Design of Electronic Stethoscope and Heart Rate Monitor for Remote Area Application

Prasad¹,

Phade²

2016

IJCA

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“…It also has the possibility of flash storage of the signal. The authors in [16] focused their research in an adaptive filter for noise cancelation of PCG signals. They use two electret microphones (one for the signal acquisition and another one for the capture of ambient noise).…”

Section: Related Workmentioning

confidence: 99%

Wireless ECG and PCG Portable Telemedicine Kit for Rural Areas of Colombia

Jimeno¹,

Hoz

Wilches³

2014

invinning

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Telemedicine is always a popular topic thanks to the constants advancements of technology. The focus on development of new devices has been mainly on decreasing size to increase portability. Our research focused on improving functionality but not giving up on portability and cost. In this paper we are presenting the first prototype device that measures 4-leads electrocardiogram (ECG) and phonocardiogram (PCG) signals with low cost, high portability and wireless connectivity features in mind. We designed and developed a prototype that measures ECG using a standard ECG cable; we designed and developed a digital stethoscope prototype and also the necessary hardware for both medical signals to be transmitted through Bluetooth to a computer. We present here the hardware design, a new communication protocol for transmission of both signals from the device to the computer, and the software system to enable remote consultations. We designed the prototype with the main purpose of using low cost parts without sacrificing functionality, with the purpose of using it in remote zones of the Caribbean coast of Colombia. We show open issues and prepare a field implementation of the kit in the target zone.

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“…For example, Belloni et al [10] applied multiple sensors for noise cancellation; different filters were used by several investigators to improve the signal-to-noise ratio. Jatupaiboon et al [11] and Ghavami et al [12] used adaptive noise reduction and adaptive line enhancement, whereas different filtering techniques using the least-mean squares, recursive least-squares algorithm, and linear prediction using autoregression were discussed by Gnitecki and Moussavi [13].…”

Section: Introductionmentioning

confidence: 99%

A Low-Noise-Level Heart Sound System Based on Novel Thorax-Integration Head Design and Wavelet Denoising Algorithm

Zhang

Chang

et al. 2019

Micromachines

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Along with the great performance in diagnosing cardiovascular diseases, current stethoscopes perform unsatisfactorily in controlling undesired noise caused by the surrounding environment and detector operation. In this case, a low-noise-level heart sound system was designed to inhibit noise by a novel thorax-integration head with a flexible electric film. A hardware filter bank and wavelet-based algorithm were employed to enhance the recorded heart sounds from the system. In the experiments, we used the new system and the 3M™ Littmann® Model 3200 Electronic Stethoscope separately to record heart sounds in different noisy environments. The results illustrated that the average estimated noise ratio represented 21.26% and the lowest represented only 12.47% compared to the 3M stethoscope, demonstrating the better performance in denoising ability of this system than state-of-the-art equipment. Furthermore, based on the heart sounds recorded with this system, some diagnosis results were achieved from an expert and compared to echocardiography reports. The diagnoses were correct except for two uncertain items, which greatly confirmed the fact that this system could reserve complete pathological information in the end.

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Electronic stethoscope prototype with adaptive noise cancellation

Cited by 22 publications

References 4 publications

Design of Electronic Stethoscope and Heart Rate Monitor for Remote Area Application

Design of Electronic Stethoscope and Heart Rate Monitor for Remote Area Application

Wireless ECG and PCG Portable Telemedicine Kit for Rural Areas of Colombia

A Low-Noise-Level Heart Sound System Based on Novel Thorax-Integration Head Design and Wavelet Denoising Algorithm

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