[Home Theater Network HDAV.com.cn] There are 3 levels of audio fever: "burning equipment"; medium burning "wire"; high fever "listening environment"; no matter how expensive audio equipment, put in a listening environment In poor places, the result is only: "waste." It can be seen that the listening environment has a considerable influence on the sound. For example, listening to the speakers in the store is very good, and the sound at home is completely different. The most common problem in the listening environment of small spaces in the home is: low frequency standing waves.
Standing wave is the frequency of indoor space air resonance, and it has nothing to do with what audio equipment is used. The most straightforward understanding is what is usually referred to: the "squeaky" of the bass. If you find that your audio bass is unclear and loose, the drums are so loud and weak; the bass dive is very small, only the humming sound is heard, but the bass stiffness is not felt. This is the effect of the standing wave.
Home room acoustic environment treatment can have means: diffusion and absorption. For high-frequency sound, the wall can be absorbed by a diffuser or with a curtain. The floor carpet is absorbed. This allows the high frequency signal to be effectively controlled, making the background quiet; it can also control the high frequency reverberation time. Low frequency sounds because the wavelength of the sound waves is very long. The 100 Hz bass wavelength is 3.44 meters and the 50 Hz bass wavelength is 6.88 meters. The standing wave frequency most commonly affecting the listening environment is between 40 Hz and 100 Hz. To diffuse the low frequencies, the width of the diffuser must be comparable to the frequency of the diffused frequency, requiring a minimum of 1/4 wavelength. Diffusion of 100Hz bass, arc-shaped diffuser requires at least 0.86 meters; and 50Hz low-frequency, at least 1.72 meters wide, and requires multiple diffusers to be placed side by side for effective diffusion. This means that unless your home environment is at least as big as a badminton court, you can have such a large diffuser.
The most common way to reduce the problem of low-frequency standing waves is to “absorbâ€. "Low frequency traps" can often be used as a means of absorbing low frequency standing waves. The principle of absorption is: when the bass passes through the sound absorbing material, the internal vibration of the material causes the sound energy to be converted into mechanical energy and thermal energy. The low frequency standing wave usually focuses on the four corners most seriously, and the low frequency trap is the best in the corner. (For more detailed explanations of low-frequency traps, read " All-round analysis of types and methods of low-frequency traps ")
Subwoofer low frequency trap
Place the method as follows:
Place low frequency traps in the four corners to the top of the ceiling.
This arrangement can attenuate the width direction; the length direction; and the height direction; best effect.
For environments where there is no space on the back or back wall, you can choose to place low frequency traps on either end until the ceiling.
This can effectively attenuate the standing wave, but the amount of sound absorption is not much more than before and after.
The above two methods are relatively cost-effective and are suitable for environments with insufficient front or rear wall space.
The above two methods are very cost effective, and the results are good, and there is not much space required. Ideal for small rooms.
The above two methods are suitable for use in a space where the spatial size ratio is poor.
More fresh and fun home theater information, please pay attention to home theater network http:// (WeChat: cnhifi), the country's most influential home theater audio player interactive media website.
British Switch Socket W80 Series
Fused Socket,Remote Control Plug Socket,Modular Switch Socket,Chrome Switches And Sockets
Guangdong Jinli Electrical Appliance Co., Ltd , https://www.sokelectric.com