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Home theater decoration has certain acoustic requirements. The main purpose of home theater decoration is to solve three problems: 1. Control the standing wave (high, medium, low frequency standing wave), suppress the reflection; 2. Proper reverberation (especially important in small rooms) and reverberation; 3. Noise and sound insulation treatment. how to do home theater decoration acoustic processing? To sum up, sound insulation, sound absorption, diffusion.
In addition to the size of the space (generally 20-30 is better), there are also acoustic requirements of home theater decoration and installation, such as the ratio of length, width and height (the better ratio is 1:1.9:3.5, the most taboo is the square, as we will discuss later).
1. How to control the standing wave (high, medium and low frequency standing wave) and suppress the reflected sound: some of you may not understand what a standing wave is. Simply put, the voice is in the form of wave propagation, spread in the room of a rule, through constant reflection, due to the superposition of acoustic yield strength to different areas (professional tool can measure), viewing or listening to the sound will feel a room somewhere in heard a grating spectrum sound, at a certain frequency details and weakening or even missing, for this kind of situation we was in a home theater decoration and equipment debugging, the wall if it is a parallel, must be treated with sound-absorbing and diffusion, common sound-absorbing processing is sound-absorbing board, sound-absorbing cotton, elastic wall and soft bag, But these two kinds of measures are not good for the low-frequency effect, we also need to make low-frequency traps for the low-frequency, elastic wall can be said to be the most perfect solution to the low-frequency standing wave problem, of course, the cost is more expensive, sound absorption wedge and other professional fields are not discussed, interested friends can search in the home theater network. If the diffusion is common is the second remainder of the diffusion plate.
2. Proper reverberation (especially important in small rooms) and reverberation: reverberation time is a very important concept, that is, the time required for sound pressure attenuation of 60dB. The reverberation time is long, indicating the sound absorption is not enough, the sound is mixed; The reverberation time is too short, the sound is too dry, absorbing too much sound. As you all know, ordinary empty room is easy to feel fullness sound when playing music, viewing or listening to the sound will feel sounds bad, make the effect of high prices to buy equipment to sell at a discount greatly, this is because of the reverberation too, sound-absorbing processing for this kind of situation we are going to do, or say in front of the sound-absorbing board, sound-absorbing cotton, soft bag and so on, but be careful not to overdo it, sound-absorbing excess can lead to dry voice, no thickness, effect. Reverberation is not as powerful as reverberation in a small room.
3. Noise, sound insulation processing: I believe that we do not want to see a big film is high, suddenly the neighbors to knock on the door of the disappointing, so the ordinary residential home theater decoration, sound insulation processing has become particularly important. How do you do the sum here? The best effect is to build brick walls, of course, there may be some circumstances inconvenient implementation, more traditional sound room sound insulation scheme is to play wood keel (note is not steel keel), filling sound insulation cotton (note is not rock wool!) , can also play a very good effect, of course, elastic wall can play a good sound insulation effect, in the wall and splint between the use of the isolator, equivalent to the addition of a spring and rubber layer, can effectively play a sound insulation effect, but also can suppress the low frequency standing wave.
These are professional practices that may confuse you as to the home theater decoration. For the sitting room home theater decoration of average family, actually the most important is to do sound insulation well, as to absorb sound and diffuse, need not pursue too much. All sorts of furniture in the sitting room will have the effect. Carpet, curtain, cotton, nap, wood have absorbing effect.
In addition to the size of the space (generally 20-30 is better), there are also acoustic requirements of home theater decoration and installation, such as the ratio of length, width and height (the better ratio is 1:1.9:3.5, the most taboo is the square, as we will discuss later).
1. How to control the standing wave (high, medium and low frequency standing wave) and suppress the reflected sound: some of you may not understand what a standing wave is. Simply put, the voice is in the form of wave propagation, spread in the room of a rule, through constant reflection, due to the superposition of acoustic yield strength to different areas (professional tool can measure), viewing or listening to the sound will feel a room somewhere in heard a grating spectrum sound, at a certain frequency details and weakening or even missing, for this kind of situation we was in a home theater decoration and equipment debugging, the wall if it is a parallel, must be treated with sound-absorbing and diffusion, common sound-absorbing processing is sound-absorbing board, sound-absorbing cotton, elastic wall and soft bag, But these two kinds of measures are not good for the low-frequency effect, we also need to make low-frequency traps for the low-frequency, elastic wall can be said to be the most perfect solution to the low-frequency standing wave problem, of course, the cost is more expensive, sound absorption wedge and other professional fields are not discussed, interested friends can search in the home theater network. If the diffusion is common is the second remainder of the diffusion plate.
2. Proper reverberation (especially important in small rooms) and reverberation: reverberation time is a very important concept, that is, the time required for sound pressure attenuation of 60dB. The reverberation time is long, indicating the sound absorption is not enough, the sound is mixed; The reverberation time is too short, the sound is too dry, absorbing too much sound. As you all know, ordinary empty room is easy to feel fullness sound when playing music, viewing or listening to the sound will feel sounds bad, make the effect of high prices to buy equipment to sell at a discount greatly, this is because of the reverberation too, sound-absorbing processing for this kind of situation we are going to do, or say in front of the sound-absorbing board, sound-absorbing cotton, soft bag and so on, but be careful not to overdo it, sound-absorbing excess can lead to dry voice, no thickness, effect. Reverberation is not as powerful as reverberation in a small room.
3. Noise, sound insulation processing: I believe that we do not want to see a big film is high, suddenly the neighbors to knock on the door of the disappointing, so the ordinary residential home theater decoration, sound insulation processing has become particularly important. How do you do the sum here? The best effect is to build brick walls, of course, there may be some circumstances inconvenient implementation, more traditional sound room sound insulation scheme is to play wood keel (note is not steel keel), filling sound insulation cotton (note is not rock wool!) , can also play a very good effect, of course, elastic wall can play a good sound insulation effect, in the wall and splint between the use of the isolator, equivalent to the addition of a spring and rubber layer, can effectively play a sound insulation effect, but also can suppress the low frequency standing wave.
These are professional practices that may confuse you as to the home theater decoration. For the sitting room home theater decoration of average family, actually the most important is to do sound insulation well, as to absorb sound and diffuse, need not pursue too much. All sorts of furniture in the sitting room will have the effect. Carpet, curtain, cotton, nap, wood have absorbing effect.
