基于语音端点检测的全腹部肠鸣音信号识别  

Bowel Sound Signal Identification of Whole Abdomen Based on Voice Endpoint Detection

作　　者：王国静[1] 王卫东[1] WANG Guojing;WANG Weidong(Center of Biomedical Engineering, Chinese PLA General Hospital, Beijing, 100853)

机构地区：[1]中国人民解放军总医院生物医学工程研究室

出　　处：《中国医疗器械杂志》2019年第2期90-93,共4页Chinese Journal of Medical Instrumentation

基　　金：国家自然科学基金青年科学基金项目(61701540);解放军总医院临床科研扶持基金(2017FC-ZHCG-2003)

摘　　要：肠鸣音是人体重要的生理信号之一,不同的肠鸣音能够反映不同的胃肠状态。该文通过自主设计的可穿戴全腹部肠鸣音记录仪,获取长时程肠鸣音数据,在自适应噪声对消、小波阈值去噪处理之后,采用基于短时能量的语音端点检测方法,可识别有效肠鸣音。实验过程和结果表明,肠鸣音记录仪操作简单、可靠,通过处理、分析和端点检测提取算法,对于有效肠鸣音的识别准确率高,具有一定的临床实用性和研究意义。Bowel sounds are one of the important physiological signals of the body, and different bowel sounds can reflect different gastrointestinal states. In this paper, long time bowel sound data is obtained with wearable full belly bowel sound recorder which is independent designed. After adaptive noise cancellation and wavelet threshold denoising, voice endpoint detection method based on short-time energy is used to identify effective bowel sounds. Experiments and results show that the sound recorder is simple and reliable. Through processing, analysis and endpoint detection algorithm, the recognition accuracy of effective bowel sounds is high, which has certain clinical practicality and research significance.

关 键 词：肠鸣音 全腹部 自适应对消 小波阈值去噪 语音端点检测 

分 类 号：TN912.3[电子电信—通信与信息系统]