Physiological mechano-acoustic signals play a pivotal role in medical diagnosis and fitness monitoring. Mechanical waves generated by natural physiological activities such as myocardial contraction, and vocal fold vibration, propagate through the tissues and fluids of the body and reveal characteristic signals of these events. Conventional methods such as stethoscope and electrocardiography (ECG) are not suitable for wearable mode and continuous monitoring. In this paper, we propose a wearable physiological sounds sensing device to monitor heart sound and detect speech and voice with high accuracy. The device consists of a MEMS (microelectromechanical systems) acoustic sensor and a low-noise amplification circuit, and both of them are packaged by silicone polymers with an air cavity to achieve conformal contact with human skin. The proposed device has advantages of light weight, sweatproof capability, resistant to noise and good stability. The wearable device has great potential in clinical diagnosis, healthcare, human-machine interaction and many other applications.

生理机声信号在医学诊断和健康监测中起着举足轻重的作用。由心肌收缩和声带振动等自然生理活动产生的机械波通过身体的组织和体液传播，并揭示这些事件的特征信号。听诊器和心电图（ECG）等传统方法不适用于可穿戴模式和连续监测。在本文中，我们提出了一种可穿戴的生理声音传感装置来监测心音并高精度地检测语音和语音。该设备由MEMS（微机电系统）声学传感器和低噪声放大电路组成，两者均采用带有气腔的硅胶​​聚合物封装，实现与人体皮肤的保形接触。所提出的装置具有重量轻、防汗、抗噪音和稳定性好的优点。可穿戴设备在临床诊断、医疗保健、人机交互等诸多应用领域具有巨大潜力。