The audio file begins with the familiar humming sound of a microwave starting up. The low, consistent drone is instantly recognizable, indicating that the microwave is heating up food. After a while, there's a series of beeps, sharp and clear. These beeps are typically associated with the microwave's timer reaching zero or a function being selected. Finally, the humming sound decreases and comes to a complete stop, signifying the end of the microwave's cycle. This audio file perfectly encapsulates the range of sounds one might hear when using a microwave, from start to finish.