Research On The Spectral Analysis Of Heart Sounds

Since the rapid development of the economy in twentieth Century, as does not adapt to work pressure and the surrounding environment, cardiovascular disease has become one of the diseases with serious harm, so the study of a method for detecting cardiovascular disease is particularly important. At present, in each big hospital, the stethoscope is the most important tool for the detection of heart sound signal, but its analysis and judgment is by virtue of the experience of medical workers, which improves the limitations and subjectivity of the detection results. For obtaining the objective and effective detection result, this paper designed the analysis system of heart sound spectrum based on ARM and Linux.The introduction part makes a basic introduction to the sound, and introduces the development situation of heart sound detection technology at home and abroad. Then according to the current situation and the development trend of detection technology, this paper presents the design concept of the spectrum analysis of heart sounds. And on this basis, this paper completed the hardware and software design of analysis system. Finally this paper analyzes the application of using heart sound spectrum to diagnose heart function disease.Through the analysis and study of heart sound signal processing technology, this paper proposes the use of a fast Fu Liye transform (FFT) algorithm for the processing of the heart sound signal in the algorithm processing of sound spectrum analysis system; uses the S3C2440 processor of ARM9 series produced by Samsung Corp as the basic hardware control platform in the selection of main hardware control chip selection of analysis system; selects the embedded Linux operating system as the software control system in the design of the software of analysis system. In addition, according to the design requirements of analysis system, this paper selects the Qt graphical interface integrated development tool as the development platform of user interface. Based on the above design, the system finally realizes the collection, processing, analysis and display of heart sound signal, and completes the design task of the system of heart sound spectrum analysis.