對於心血管系統的檢測與判別中，心臟聽診是一個相當快速且基本的診斷方式。心音主要由第一心音與第二心音所構成，因此在有其他外界雜音與額外的心雜音干擾下，區別第一心音與第二心音是一個困難且重要的議題。為了快速、有效地區別心音種類，本論文提出了一個心電與心音之同步監控系統。
此系統主要可分為兩個部分，第一部分為使用晶片方式實現的訊號感測類比前端，包含電容耦合放大器、轉導放大器、高通三角積分調變器以及數位訊號處理電路，此晶片使用標準的0.18 μm金氧複合半導體製程製造。第二部分則是將晶片感測解析後之心電及心音訊號同步以行動裝置上的軟體呈現、記錄或偵測。
在聽診時，醫生可參考在行動裝置上呈現的生理訊號並同時聽取心音訊號，以達到更有依據並有效之診斷。此系統將生理訊號視覺化且保留原本的診斷方式，希望能提升醫生聽診之效率，並後續能夠建立心電結合心音的資料庫，使得後續心臟疾病相關之學習環境與效率能夠有效的提升。

In the examination of cardiovascular system, heart sound auscultation is a fast and fundamental technique. The main components of heart sound are the first heart sound and the second heart sound. The discrimination of these heart sounds will be difficult under the impacts of additional heart sound and murmurs. In order to recognize these signals efficiently, a phonocardiogram and electrocardiography synchronous monitoring system is proposed. There are two key points in the proposed system. The first is the chip implementation including capacitor coupled amplifier, transimpedance amplifier, high-pass sigma–delta modulator, and digital signal processing block. The chip in the system is fabricated in the 0.18 μm standard complementary metal–oxide–semiconductor process. The second part realizes a software application on smartphone for heart-related physiological signals recording, display, and detection. During the auscultation examination, the doctors may refer to these physiological signals displayed on smartphone and simultaneously listen to the heart sound for diagnosing the potential heart disease. By taking advantage of signal visualization and keeping the original diagnosis procedure, the uncertainty existing in heart sounds can be eliminated, and the training period of auscultation skills can be reduced.

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