Although the "home theater" system has gradually become a must for families, it still requires some techniques for its formation. Many people are often confused and do not get better audiovisual experience because of the addition of new equipment and the use of new technologies. Those high-end devices did not play its full role or even become furnishings. Home theater is a complete audio and video reproduction system, including signal sources, audio playback and video display, and many other aspects, including the use of the environment, system composition, collocation, connection, manipulation and other content. They must be organically integrated to form a harmonious whole, sometimes in line with people's aesthetic vision, living habits, and even the indoor environment.
First, look at the size of your house
1. The use of a space home theater As the name suggests, a home theater system is used, so it must have a place to sit, whether it is a living room, bedroom, study, or a dedicated audio-visual room. The requirements for equipment in different environments are different, and the audio and video effects created by open and closed spaces are completely different. This is the first consideration.
If the audio/video system is set in a public activity area, such as a living room, a stylish and concise system should be appropriate, and consideration should be given to the coordination with the environment. In an independent space, such as a specially planned audio/video room, you can enjoy it with fever. Combinations and collocations are preferred. Good shading can be considered large-screen projectors, it is best not to use a 4:3 screen ratio of professional or business projectors, but should use 16:9 home video projector; Note that there is no special light In a brighter environment, it is not suitable to use a projector as a video playback device, but a large-size TV is more suitable. A 16:9 32-inch screen is the most basic requirement. Under the circumstances, the large-size TV is more suitable. Can create a good cinematic effect.
2. It is best not to use a large speaker in a small room, or a small LCD TV in a large room. This is the basic knowledge of optional equipment.
Generally speaking, projectors can be used in closed spaces above 18 square meters, while audio-visual rooms over 50 square meters are required to come with a large amount of equipment to purchase funds, but also have good acoustics processing. Of course, the effect is also difficult to reach in small rooms. of. However, there is no absolute reason. If you carefully select the equipment and adjust the characteristics of the room, even if only 10 square meters, you can also play a good effect.
Good audio-visual effects are very relevant to the existing conditions of space, so no matter what the choice of hardware or the software facilities, only with a good match can you enjoy the cinema-level effect.
3. Room proportions Do not use the room where the ratio of length, width and height is an integral multiple of the room as the audiovisual room. Otherwise, the strong standing wave will make all efforts work harder. No matter how good the equipment is in such an environment, there will not be a good voice. If you have no other choice, you must also reduce standing waves with simple acoustics, furniture, and other interior items. If conditions permit, change the proportion of rooms by way of ceilings, partitions or floor treatments during the renovation.
If there is a special space for the home theater space, then the lighting, sound, etc. can be developed toward the professional level.
4. Space and Acoustic Processing If adequate funding is available, professional acoustics will allow you to do more with less. Video and audio consultants can help, but these high-quality companies are not much. If you don't have enough input, you can't just gossip and you can get good results as long as you are careful. However, some basic acoustic rules must be followed, such as not having too many, too big glass windows, cabinets, not too thin bookcases, etc. These hard or loose objects are the killer of sound, especially for low frequencies. This kind of environment is completely a disaster. The carpets, sofas, bookcases, paintings, curtains, and so on are all good props for tuning. The proliferation, absorption, and other processing environments are certainly much better than the four sides of the wall. In addition, if the large screen projection, in addition to strict shading treatment, the room color tone should not be too bright, to avoid the reflective projection back to the screen, so that the image gray, loss of detail.
Second, interior design to ensure visual and audio effects
1. Material selection. Many of the materials that are currently used in households are incompatible with audiovisual requirements. For example, the use of several materials such as glass, ceramic tiles, and stone materials can cause excessive reflections of sound waves and light, affecting audiovisual effects. Considering audiovisual effects, ideal decorative materials are low-reflective decorative fabrics, wallpaper, wood, and dark paint.
2. Furniture options. When choosing furniture, it is best to choose furniture made from solid materials. In order to avoid trembling noise, the furniture in the room should be placed in a solid and secure manner, especially the glass doors on the furniture, the glass shelves of the display cabinet, etc., must be tightly closed.
3. Late accessories. In the selection of late decorations, it is necessary to avoid hostility and allow audiovisual equipment in the living room to sing "protagonists." Especially in the selection of decorative paintings and green plants, we must pay more attention to this point.
4. Audiovisual background wall. The so-called audio visual wall is the wall behind the TV and stereo. In order to achieve the best audio-visual effects, this wall is best to use a soft package, or use a wooden sound-absorbing panel for decoration. In terms of color and pattern design, it is better to look at the background wall as it is not “eye-catchingâ€.
Third, determine the number of investment and the proportion of people in the formation of a home theater first consider investment, but in fact the environment is the most important. If the environment is not good and it is not dealt with, no amount of investment is worthless. Money is not a panacea. If you adjust well, cheap equipment will have good results. As far as investment is concerned, entry-level video equipment, including video equipment, can be up to the standard of 20,000 yuan, and a generous investment of over 1 million yuan. If you do not carefully adjust the possible effects, it is not unusual. The key lies in whether or not the users design with care.
As for the proportion of investment, in 50,000 to 100,000 yuan, the source of the signal: video: audio: accessories (wire, racks, etc.) for 1:3:4:1 ratio is more appropriate. But this is not absolute, sometimes the characteristics of equipment, cost-effective and other factors will also affect the distribution of investment ratio, to "according to local conditions" and flexible control, the important thing is that the proportion of inputs should not be too imbalanced, forming a bucket effect.
Fourth, wire pre-embedded and connected before the decoration is best to the wire, including power lines, speaker lines, signal lines are all planning, set a good position, as well as lighting, control, etc. are considered well, it is best to do acoustic processing together Otherwise, hanging around the line can be quite upsetting. Remember to use high-quality wire, and don't forget to add the root HDMI cable. Now it's best to use digital transmission for audio and video.
There are many techniques for the connection of wire rods, but some basic principles also need to be followed. For example, the signal lines should not be as close as possible to the power lines and the speaker wires; the digital transmission should be clearly separated from the analog transmission; the wire should not be significantly larger than 90 degrees. Bend and so on.
Five, pay attention to collocation techniques High-brightness projector with low-gain projection screen, low-sensitivity speakers with large power amplifiers, these are the basic rules of the match. Each piece of equipment has its own style and personality. To be integrated, users should go to Audio City and specialty stores several times to listen to and learn more about each other.
VI. Placement of audio-visual equipment
1. Placement of equipment such as televisions and AV amplifiers. It is best to use flat-placed machines rather than stacking them together like a pyramid. The equipment racks a variety of audio equipment, and the top of the equipment is placed on a large-screen TV. A 32-inch tablet weighing about 30 kilograms, plus DVD, deck, AV amplifier and other equipment, its weight is not light. Therefore, the rack must be solid, and the height between the shelves of the rack can be adjusted. TVs and speakers should not be placed on the same horizontal line, otherwise the screen on the screen will have a sense of retreat when playing back sounds. The correct approach is to place the television in front of the speaker.
2. Placement of the speakers The placement of the two speakers should maintain symmetry in the sound characteristics. The listener and the right and left speakers are preferably isosceles triangles, and the distance between the two speakers is best from 2.5 meters to 3 meters. In a typical room, the speakers can be placed on the wide side of the room. The distance between the speakers and the wall should not be less than 0.2 meters, and the reflection on both sides of the room should be as similar as possible. There should be an open area in front of the speakers to direct the sound waves to the listener. Do not discharge the player on the speaker, otherwise it will cause a whistle; also do not put a work of art to avoid causing resonance and destroy the sound quality. The placement height is an important factor affecting the replay sound quality because the tweeter in the speaker is highly directional and the tweeter's axis should be at the same height as the listener's ear. In addition, the reflection and diffraction phenomenon is prominent when the bass is transmitted, so the height of the subwoofer from the ground will also directly affect the bass quality. In order for the speaker to be placed to satisfy the sound reproduction effect, a speaker stand is usually used to adjust the height and steering of the speaker. The speaker stands are made of wood or metal, but they must be strong and cannot be shaken. A typical home theater may use more than 5 speakers. The center speaker can be placed below or above the TV, but it must be magnetically shielded, otherwise it will magnetize the tube. Two boxes can be placed behind the listener's side slightly above the listener's head. It can be placed on a dedicated stand, or it can be mounted on metal brackets with expansion screws and mounted on the speaker.
3. The layout of audio-visual equipment should take into account the decorative effects of the room. Whether it is a television or a stereo, most of them are black and gray rectangles. This traditional shape is easier to place. The average family is accustomed to placing audio-visual equipment in the living room, but many families only pay attention to the size of the audio-visual equipment and seldom consider the size of the room. If you place a large speaker in a small living room, it looks very uncoordinated and the listening effect is not good. At present, the living room of most families is bright and elegant. The black-gray television or stereo placed in the corner of the room can play a good decorative role. If the room is large, the audio and video equipment can occupy the position of a wall. When placing, attention should be paid to the high and low collocation and patchwork. If the room is too small, it can occupy a small corner of the room and display small decorations, such as flower arrangements and small ornaments, to make the corners of dark electrical appliances become vivid.
Seven, equipment debugging and system adjustment When the equipment is in place, after the installation is completed, the commissioning work begins. There is no sound, there is a picture, you need to carefully understand the function of each piece of equipment. TVs and projectors must use software to test and tune their images. For example, HIVI CAST is a relatively easy-to-use debugging software. The sound is more complicated. In addition to the correct installation according to the theater standards, the position and angle of the center and surround should be adjusted several times. There is also a "subwoofer" that needs to be moved little by little.
The home theater environment involves acoustic processing techniques such as sound absorption and diffusion, as well as optical processing techniques. Skills are everywhere and more studies, more readings, and more listening are required.
First, look at the size of your house
1. The use of a space home theater As the name suggests, a home theater system is used, so it must have a place to sit, whether it is a living room, bedroom, study, or a dedicated audio-visual room. The requirements for equipment in different environments are different, and the audio and video effects created by open and closed spaces are completely different. This is the first consideration.
If the audio/video system is set in a public activity area, such as a living room, a stylish and concise system should be appropriate, and consideration should be given to the coordination with the environment. In an independent space, such as a specially planned audio/video room, you can enjoy it with fever. Combinations and collocations are preferred. Good shading can be considered large-screen projectors, it is best not to use a 4:3 screen ratio of professional or business projectors, but should use 16:9 home video projector; Note that there is no special light In a brighter environment, it is not suitable to use a projector as a video playback device, but a large-size TV is more suitable. A 16:9 32-inch screen is the most basic requirement. Under the circumstances, the large-size TV is more suitable. Can create a good cinematic effect.
2. It is best not to use a large speaker in a small room, or a small LCD TV in a large room. This is the basic knowledge of optional equipment.
Generally speaking, projectors can be used in closed spaces above 18 square meters, while audio-visual rooms over 50 square meters are required to come with a large amount of equipment to purchase funds, but also have good acoustics processing. Of course, the effect is also difficult to reach in small rooms. of. However, there is no absolute reason. If you carefully select the equipment and adjust the characteristics of the room, even if only 10 square meters, you can also play a good effect.
Good audio-visual effects are very relevant to the existing conditions of space, so no matter what the choice of hardware or the software facilities, only with a good match can you enjoy the cinema-level effect.
3. Room proportions Do not use the room where the ratio of length, width and height is an integral multiple of the room as the audiovisual room. Otherwise, the strong standing wave will make all efforts work harder. No matter how good the equipment is in such an environment, there will not be a good voice. If you have no other choice, you must also reduce standing waves with simple acoustics, furniture, and other interior items. If conditions permit, change the proportion of rooms by way of ceilings, partitions or floor treatments during the renovation.
If there is a special space for the home theater space, then the lighting, sound, etc. can be developed toward the professional level.
4. Space and Acoustic Processing If adequate funding is available, professional acoustics will allow you to do more with less. Video and audio consultants can help, but these high-quality companies are not much. If you don't have enough input, you can't just gossip and you can get good results as long as you are careful. However, some basic acoustic rules must be followed, such as not having too many, too big glass windows, cabinets, not too thin bookcases, etc. These hard or loose objects are the killer of sound, especially for low frequencies. This kind of environment is completely a disaster. The carpets, sofas, bookcases, paintings, curtains, and so on are all good props for tuning. The proliferation, absorption, and other processing environments are certainly much better than the four sides of the wall. In addition, if the large screen projection, in addition to strict shading treatment, the room color tone should not be too bright, to avoid the reflective projection back to the screen, so that the image gray, loss of detail.
Second, interior design to ensure visual and audio effects
1. Material selection. Many of the materials that are currently used in households are incompatible with audiovisual requirements. For example, the use of several materials such as glass, ceramic tiles, and stone materials can cause excessive reflections of sound waves and light, affecting audiovisual effects. Considering audiovisual effects, ideal decorative materials are low-reflective decorative fabrics, wallpaper, wood, and dark paint.
2. Furniture options. When choosing furniture, it is best to choose furniture made from solid materials. In order to avoid trembling noise, the furniture in the room should be placed in a solid and secure manner, especially the glass doors on the furniture, the glass shelves of the display cabinet, etc., must be tightly closed.
3. Late accessories. In the selection of late decorations, it is necessary to avoid hostility and allow audiovisual equipment in the living room to sing "protagonists." Especially in the selection of decorative paintings and green plants, we must pay more attention to this point.
4. Audiovisual background wall. The so-called audio visual wall is the wall behind the TV and stereo. In order to achieve the best audio-visual effects, this wall is best to use a soft package, or use a wooden sound-absorbing panel for decoration. In terms of color and pattern design, it is better to look at the background wall as it is not “eye-catchingâ€.
Third, determine the number of investment and the proportion of people in the formation of a home theater first consider investment, but in fact the environment is the most important. If the environment is not good and it is not dealt with, no amount of investment is worthless. Money is not a panacea. If you adjust well, cheap equipment will have good results. As far as investment is concerned, entry-level video equipment, including video equipment, can be up to the standard of 20,000 yuan, and a generous investment of over 1 million yuan. If you do not carefully adjust the possible effects, it is not unusual. The key lies in whether or not the users design with care.
As for the proportion of investment, in 50,000 to 100,000 yuan, the source of the signal: video: audio: accessories (wire, racks, etc.) for 1:3:4:1 ratio is more appropriate. But this is not absolute, sometimes the characteristics of equipment, cost-effective and other factors will also affect the distribution of investment ratio, to "according to local conditions" and flexible control, the important thing is that the proportion of inputs should not be too imbalanced, forming a bucket effect.
Fourth, wire pre-embedded and connected before the decoration is best to the wire, including power lines, speaker lines, signal lines are all planning, set a good position, as well as lighting, control, etc. are considered well, it is best to do acoustic processing together Otherwise, hanging around the line can be quite upsetting. Remember to use high-quality wire, and don't forget to add the root HDMI cable. Now it's best to use digital transmission for audio and video.
There are many techniques for the connection of wire rods, but some basic principles also need to be followed. For example, the signal lines should not be as close as possible to the power lines and the speaker wires; the digital transmission should be clearly separated from the analog transmission; the wire should not be significantly larger than 90 degrees. Bend and so on.
Five, pay attention to collocation techniques High-brightness projector with low-gain projection screen, low-sensitivity speakers with large power amplifiers, these are the basic rules of the match. Each piece of equipment has its own style and personality. To be integrated, users should go to Audio City and specialty stores several times to listen to and learn more about each other.
VI. Placement of audio-visual equipment
1. Placement of equipment such as televisions and AV amplifiers. It is best to use flat-placed machines rather than stacking them together like a pyramid. The equipment racks a variety of audio equipment, and the top of the equipment is placed on a large-screen TV. A 32-inch tablet weighing about 30 kilograms, plus DVD, deck, AV amplifier and other equipment, its weight is not light. Therefore, the rack must be solid, and the height between the shelves of the rack can be adjusted. TVs and speakers should not be placed on the same horizontal line, otherwise the screen on the screen will have a sense of retreat when playing back sounds. The correct approach is to place the television in front of the speaker.
2. Placement of the speakers The placement of the two speakers should maintain symmetry in the sound characteristics. The listener and the right and left speakers are preferably isosceles triangles, and the distance between the two speakers is best from 2.5 meters to 3 meters. In a typical room, the speakers can be placed on the wide side of the room. The distance between the speakers and the wall should not be less than 0.2 meters, and the reflection on both sides of the room should be as similar as possible. There should be an open area in front of the speakers to direct the sound waves to the listener. Do not discharge the player on the speaker, otherwise it will cause a whistle; also do not put a work of art to avoid causing resonance and destroy the sound quality. The placement height is an important factor affecting the replay sound quality because the tweeter in the speaker is highly directional and the tweeter's axis should be at the same height as the listener's ear. In addition, the reflection and diffraction phenomenon is prominent when the bass is transmitted, so the height of the subwoofer from the ground will also directly affect the bass quality. In order for the speaker to be placed to satisfy the sound reproduction effect, a speaker stand is usually used to adjust the height and steering of the speaker. The speaker stands are made of wood or metal, but they must be strong and cannot be shaken. A typical home theater may use more than 5 speakers. The center speaker can be placed below or above the TV, but it must be magnetically shielded, otherwise it will magnetize the tube. Two boxes can be placed behind the listener's side slightly above the listener's head. It can be placed on a dedicated stand, or it can be mounted on metal brackets with expansion screws and mounted on the speaker.
3. The layout of audio-visual equipment should take into account the decorative effects of the room. Whether it is a television or a stereo, most of them are black and gray rectangles. This traditional shape is easier to place. The average family is accustomed to placing audio-visual equipment in the living room, but many families only pay attention to the size of the audio-visual equipment and seldom consider the size of the room. If you place a large speaker in a small living room, it looks very uncoordinated and the listening effect is not good. At present, the living room of most families is bright and elegant. The black-gray television or stereo placed in the corner of the room can play a good decorative role. If the room is large, the audio and video equipment can occupy the position of a wall. When placing, attention should be paid to the high and low collocation and patchwork. If the room is too small, it can occupy a small corner of the room and display small decorations, such as flower arrangements and small ornaments, to make the corners of dark electrical appliances become vivid.
Seven, equipment debugging and system adjustment When the equipment is in place, after the installation is completed, the commissioning work begins. There is no sound, there is a picture, you need to carefully understand the function of each piece of equipment. TVs and projectors must use software to test and tune their images. For example, HIVI CAST is a relatively easy-to-use debugging software. The sound is more complicated. In addition to the correct installation according to the theater standards, the position and angle of the center and surround should be adjusted several times. There is also a "subwoofer" that needs to be moved little by little.
The home theater environment involves acoustic processing techniques such as sound absorption and diffusion, as well as optical processing techniques. Skills are everywhere and more studies, more readings, and more listening are required.
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