With the rise of home theaters and professional audio-visual rooms, the combination of environmental architectural acoustic technology and natural space decorative visual effects has put forward higher requirements. For this reason, for the characteristics of home theaters and small and medium-sized audio-visual rooms, from acoustic measurements, Acoustic design, construction, acceptance and provision of equipment solutions and installation and commissioning require more specialized technology.
According to the following acoustic requirements:
The sound quality of the audio equipment plays a very close relationship with the acoustic characteristics of the building environment. To make the sound system perform at its highest performance, the listening room must be acoustically treated.
According to the THX standard, the audio-visual room should meet:
1. Whiteness and accuracy
2. Precise sound localization
3. Smooth panning movement
4. A very spatial surround sound field
5. Balanced sound
6. Fast and compact low frequency performance
7. Broad dynamic range
8. Each location is emperor
In order to meet the above acoustic requirements, there are four aspects that need to be considered for the following aspects of design:
a. Reverberation time
b. Diffusion characteristics
c. Frequency characteristics of the room and various sound defects
d. Environmental noise level
If the acoustic treatment is not handled properly or not processed, the following situations will occur:
a. The reverberation time is too short, the sound is dry, boring and tasteless, and it is not friendly. If the reverberation time is too long, the sound will be ambiguous, the reflection sound will cover the spread of the direct sound, the sound position will be chaotic, and the sound will be unclear. If you enlarge the volume, it will also enhance the energy of the reflected sound, which makes people feel noisy and seriously affects the sense of hearing;
b. The indoor sound field is uneven, the sound of each frequency band is unbalanced, the sound is not round; it is not pleasant; it is not full; it is not warm. The surround sound field does not produce a good sense of envelopment.
C. There are serious acoustic defects such as standing waves, resonance, and tremor echoes in the room. These defects seriously affect the sense of hearing. In severe cases, the audio-visual room cannot be used normally.
d. Background noise affects the quiet room environment and affects the audiovisual experience. Or the sound of audio equipment affects the lives of others.
The room size is not very large, about 16 flat. Customers demand practical, simple, environmentally friendly, and the effect is obviously improved. It is necessary to take care of both music and cinema. The general theater is mainly based on absorption, but customers usually listen to music more often. Through the analysis and calculation of the volume structure of the room, the combined absorption is performed for the high frequency 2KHz~20KHz, the intermediate frequency 500Hz~2KHz, and the low frequency 20Hz ~ 500Hz. According to the sound absorption coefficient curve of each material, the sound absorbing materials of each frequency band are reasonably arranged to the wall. On the ground and top structure, the reverberation time of the audio-visual room is optimized, and the integrated curve structure area is straight, so that the sound absorption in each frequency band is balanced. In the design, it is necessary to increase the proportion of the diffused part, considering the QRD diffuser at the top and the alpha diffuser on the back wall, which is beautiful and practical, and has obvious diffusion. In order to avoid the resonance of the room, the audio-visual room uses a wooden keel as the base and the cavity is reinforced. The room is not a resonance when it comes to the interpretation of Hollywood blockbusters.
This room is fully designed to take into account the generation of standing waves, so add low-frequency traps in the design, pay attention to the processing of the two corners in the picture, is made into a semi-arc type, filled with polyester environmentally friendly organic cotton.
The two sides of the wall are filled with an organic cotton plus polyester acoustic board. There are two windows on the right wall. Treatment method velvet heavy thickened curtains.
With a new perspective, responsible attitude, professional technology and exquisite craftsmanship, AV will only bring the perfect audio-visual experience to the enthusiasts and audio-visual enthusiasts, and constantly strive for the innovation and development of the acoustic industry!
Extreme audiovisual enjoyment, you can have it now!
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