The sound came from a tram leaving the recorder's stop. There's a sound of a bell announcing its leave later, with the sound of its gradually increasing high speed. Located in Tampere, Finland. This was recorded with Iphone X (2017), Apple, MEMS microphones. Recording App: Audio Recorder (Jakub Bartus) This sound serves as training data for our Audio & Speech Processing Project. Also, it helps recognize the sound of tram leaving in daily occasions of Tampere, Finland for people in need.