Acoustic environment design of classroom

Acoustically, an open design classroom is probably the worst.

Although it is beneficial to some teaching methods or the interaction between teachers and students, there are serious acoustic disadvantages.

The students are easily disturbed by the sound and image signals of the neighboring classes.

Moreover, students with poor listening ability or lack of concentration still have difficulty in listening to the class when there is mechanical noise, so what happens to them when the noise is a clear signal?

To overcome these problems, many open design classrooms use half height partitions or curtain like movable partitions.

These partitions eliminate visual barriers, but they do little to reduce noise.

Another inappropriate design is a classroom with a large gypsum board ceiling, hard walls and floors.

The reverberation and echo of this kind of classroom will greatly reduce the listening clarity, especially for young children.

Reverberation is different from mechanical noise and cannot be overcome by increasing the volume of the teacher. Sound absorption decoration must be adopted to absorb harmful reflected sound.

The sound insulation and decoration project of classroom is the main business of acoustic engineering of Guangzhou Weilai acoustics Co., Ltd. Weilai has accumulated rich experience in many cases of sound insulation and absorption project of classroom,

At the same time, the company also produces special classroom sound insulation material plant fiber spraying, the material is suitable for the sound absorption and sound insulation of the classroom, with sound absorption and sound insulation, heat preservation and fire prevention functions;

With professional construction technology and sound-absorbing materials with excellent sound-absorbing performance, wellay can easily make the sound-absorbing and sound-insulating effect of the classroom sound-proof cotton reach your design standard or relevant national standards.

Weilai technology introduces some solutions.

Installing a built-in ceiling with sound absorption in the classroom and laying a carpet on the floor will have a good acoustic effect and reduce the reverberation time

。 This method is economical for the construction of new classroom and the reconstruction of existing classroom. For small and medium-sized classrooms, the reverberation time is acceptable if a built-in ceiling exceeding nrc0.75 is used

Carpet can absorb high frequency noise, but it is mainly used to reduce the noise made by students themselves.

Unfortunately, this method has no effect on controlling wall reverberation.

However, if the furniture such as ambry, bookcase is arranged deliberately, the wall with big and flat partition can also reduce echo.

The best design of a lecture room is to move part of the sound-absorbing material from the ceiling onto the wall and keep the center of the ceiling hard so as to ensure that the teacher's words are reflected to the back of the classroom.

This kind of semi absorption and semi reflection ceiling seems to be complex, but it can be built in a standard grid way.

Only place the acoustic ceiling board around the ceiling, and place gypsum board on several grids of the ceiling.

If you need to reflect more sound to the back of the classroom, you can set the reflected surface of the ceiling according to the teacher's position at the front.

This part of the reflecting surface must be made of solid materials such as plywood or gypsum board, and can be painted to coordinate with the whole house.

Putting sound-absorbing material in the wall can also reduce reflection and eliminate echo.

The two inch thick fiberglass sheet with textile surface has good performance because of its beautiful appearance, rough surface and absorption of part of low-frequency noise.

Add carpet on the ground, it will be a classroom with excellent acoustic effect, short reverberation time, no echo, uniform reflection, and low internal noise.

And all this is done by ordinary building materials.

The sound-absorbing and sound-proof cotton A-18 is selected for spraying, which is economical and cost-effective, and the price is much lower than that of traditional sound-absorbing materials,

Spray directly on the ceiling, glass, steel pipe and wall of complex structure, the construction is simple, perfectly combined with the original pattern of the building, and the construction time is greatly reduced.

What's more, there are a variety of colors to choose from, which fully conform to the designer's design style. Or in terms of sound absorption, sound insulation, fire resistance, etc,

Sound absorbing cotton A-18 has incomparable advantages over traditional acoustic materials, and achieves the original intention of the owner to upgrade the sound effect.