助听器是一个声音放大装置，能有效地放大外界的声音。有听力损失的患者，可以通过佩戴Hearing aid，听到放大后的声音信号，提高自身的听觉能力，提高生活质量，减少得老年痴呆的概率。
2. From the perspective of the wearer, human sleep is divided into three levels, the depth is moderate and shallow. In the deep sleep state, the human ears cannot hear the sound without working. In the moderate and light sleep state, it can Hear loud sounds, but such sounds usually interfere with the quality of human sleep, make people poorly rested, and affect the mental state of the next day.
4、自己的感受，带着助听器睡觉一点都不舒服，白天本来外耳道就塞着耳模，很不舒服了，晚上睡觉再不让耳朵休息一下。有人说只带一只行不行，难道你睡觉不会翻身吗？翻到助听器那一边很有可能压到设备，出现问题那就真是因小失大了。
尽管戴着助听器睡觉不被建议，实际上却有小部分人由于各种原因，希望在睡眠过程中也被辅助聆听，此时可以偿试一下······
