Digital Stethoscope Design

Date

2010-01-25T16:46:25Z

Authors

Cheung, Liam
Hin, Andy
Wood, Chris

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Abstract

This paper details a new design for a digital stethoscope, which has the ability to filter out ambient noise and reduce playback speed. The design largely resembles a traditional acoustic stethoscope but with a digital embedded system to handle the ltering and reduced playback speed. Initial signal processing testing of the design has been conducted with results showing successful reduction in ambient noise and faithful replication of sound at a reduced speed.

Description

Created in fulfillment of the course requirements for ENGG*3100 Engineering and Design III. This course combines the knowledge gained in the advanced engineering and basic science courses with the design skills taught in ENGG*1100 and ENGG*2100 in solving open-ended problems. These problems are related to the student's major. Additional design tools are presented, including model simulation, sensitivity analysis, linear programming, knowledge-based systems and computer programming. Complementing these tools are discussions on writing and public speaking techniques, codes, safety issues, environmental assessment and professional management. These topics are taught with the consideration of available resources and cost.

Keywords

Time domain harmonic scaling, Heart defect, Digital stethoscope, Butterworth filter

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