Description: Sound of the seat belt being pulled and clipped in heard from inside a Mini Cooper

Description: A Blue Line subway train passing through a station heard from the underground tunnel

Description: Sound heard from a busy 4 stop intersection in San Diego.

Description: Sound heard from a busy 4 stop intersection in San Diego.

Description: A motorcycle revving it's engine and accelerating away into the distance. This is heard from roughly 30 feet away.

Description: A motorcycle driving by in a small suburb during the day

Description: The sound of a train passing by a train stop from 30 feet away. The sound of the train stop bells and the train horn can also be heard.

Description: The sound of a train passing by a train stop from 30 feet away. The sound of the train stop bells and the train horn can also be heard.