ELI5: Explain Like I'm 5

Sound transmission class

Hey kiddo!
Have you ever heard someone talking from the next room or outside? When you can hear them, it means that sound is traveling through something, like a wall, to get to your ears.

Now, imagine that you want to make sure that the sounds of someone talking in a room don't travel too much to the other rooms around it. If you're building a house or a building, you want to make sure that the people in one room can't hear the people in another room too much.

This is where Sound Transmission Class (STC) comes in. It's a way to measure how much sound is able to travel through something, like a wall or a door. The higher the STC number, the less sound can travel through.

Think about it like a coat. A really thick coat is going to keep you warm in the winter because it keeps the cold air out, right? Well, a wall with a high STC number is like a thick coat- it keeps sound from traveling through it.

So, if you want to make sure that a room is really quiet, you need to make sure the walls and doors have a high STC number. But, if you want to make sure that a room has good sound quality, like if you're recording music, then you might want walls with a lower STC number, so sound can travel between rooms.

Was that helpful, kiddo?