title: Motion noise cancellation in seismocardiogram of ambulant subjects with dual sensors.
abstract: This paper presents a dual-sensor method of extracting seismocardiographic (SCG) data from moving adult subjects using chest-worn wireless MEMS accelerometers. A digital signal processing (DSP) system including a normalized least means square (NLMS) adaptive filter is designed and tested in MATLAB. Data results from 10 subjects indicate a detection rate of 98.72% which outperforms our previously-proposed single-sensor scheme. Various sensor positons and possible failure mechanisms are also investigated to further evaluate the system performance. The results reveal that the quality of the SCG signal from moving subjects could be improved by integrating information from multiple sensors at the cost of increasing system complexity.
authors.lastname: Chenxi Yang
authors.forename: Negar
authors.initials: N
authors.lastname: Tavassolian
mesh_terms: D000328:Adult; D000465:Algorithms; D004562:Electrocardiography / Q000295:instrumentation / Q000379:methods*; D004566:Electrodes; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods*; D055617:Micro-Electrical-Mechanical Systems / Q000295:instrumentation / Q000379:methods; D012815:Signal Processing, Computer-Assisted; D059629:Signal-To-Noise Ratio; D016138:Walking