The prompt sound of Douyin sw is the interface identification of bass or subwoofer output. According to the prompt sound for querying relevant information on Douyin, you can set it in the notification sound option of the mobile phone system. Douyin is a music and creative short video social software that can shoot short videos. The software was launched in September 2016. A short music video community focusing on young people. Users can choose songs through this software, shoot short music videos, and form their own works. This APP has been launched in all major Android application stores and APPStore.