what is kind of sound
There are the sounds that animals and other living things make (hums, chirps, whirring of wings). Wind, rain, snow, thunder and other natural noises. There are machine made sounds. Various types of sounds made by cars (bass boom, tire noise, engine noise), planes (sonic boom), trucks and so on. Factory noises. IBM selectric, keyboard and other noises. Another way you could categorize them is by matching the sound to a music note.