How does noise spread in residential buildings? Is it up and down or left and right?

Noise from residential buildings can travel up and down, or left and right.

First of all, noise can be transmitted directly through the air, for example through cracks in doors, windows or pipes. In addition, noise can also be transmitted through barriers such as walls. When sound reaches a wall or other isolator, the sound waves cause the wall to vibrate like a diaphragm, forming a secondary sound source on the other side of the wall and radiating the sound into the room.

In addition, if an isolator such as a wall is subjected to a mechanical impact or vibration, the vibration will also propagate along the isolator and emit sound.

In residential buildings, the sound from downstairs can be easily transmitted upstairs and clearly because the walls are strong and the walls do not have much soundproofing material (not a large elastic coefficient). In addition, as sound travels through different substances, the sound waves gradually weaken. The sound waves gradually diminish during the transmission of sound from upstairs and downstairs, which is why the upstairs noise can be heard and the downstairs sound is less easily heard.

To sum up, the propagation mode of noise in residential buildings can be up and down, or left and right, depending on the ** and propagation route of the noise.

The correct way to transmit noise from residential buildings is from all directions. As long as the sound insulation in one place is not done well, then which one will suffer... Therefore, sound insulation is still very important, and it should be paid attention to!

Sound travels through the air, and the distance it travels is related to the frequency, the higher the frequency, the farther it travels, so the noise travels in all directions in the air.

It is generally transmitted upwards.

Summary. Hello dear<>

As long as the wall is strong and the wall does not have too much soundproofing material (the elasticity coefficient is not large), the sound downstairs is easy to transmit upstairs and is very clear. 1. The reason is that the noise is generally divergent to upload. 2. Sound propagates in different substances, and sound waves will gradually weaken.

The reason why you can hear the noise upstairs is that most of the sound made by the upstairs when it hits the ground floor, the sound is transmitted directly to the downstairs through the floor, so it can be heard very clearly, but if the sound of non-ground sound, such as the sound of speaking, is to be transmitted downstairs, it will pass through the air upstairs Floor floor Indoor air downstairs Human ears, the sound wave will gradually decrease.

The downstairs neighbor is noisy, may I ask the propagation route of this noise, whether it is spread by the floor slab or the window?

Hello dear<>

As long as the walls are strong and the walls do not have too much soundproofing material (the elasticity coefficient is not large), the sound from downstairs can easily be transmitted upstairs and is very clear. 1. The reason is that the noise is generally divergent to upload. 2. Sound propagates in different substances, and sound waves will gradually weaken.

The reason why you can hear the noise upstairs is that most of the sound made by the upstairs when it hits the floor slab of the ground cavity slide surface, the sound is transmitted directly to the downstairs through the floor slab, so it can be heard very clearly, but if the sound is not made from the ground, such as the sound of speaking, it will be transmitted downstairs, and it will pass through the air upstairs Floor floor Indoor air downstairs Human ears, the sound wave will gradually decrease.

3. In the same way, the sound from downstairs should be transmitted to the upstairs through the floor slab, and it will pass through the indoor air downstairs Floor upstairs indoor air Human ears.