College】 【weak sound of the three elements of quality in China --- Power By weak home 【Network】.

<br> want to move back home the most beautiful music, an original high-fidelity discs, a luxury hi-fi is not enough. .You might ask: so much for repairing the sound, the disc is not enough, then you want to say by how much things need to put ah? .You do not worry, we can then speak, in effect, although a good quality to enhance the performance of your home stereo, but does not require you to additional investment. .<BR> <BR> Home appliances in addition to the existing water dispenser, rice cooker for a class of small household appliances, the products are basically large "semi-finished products." .Why? .Breaking with your fingers the number of it, from the television, air conditioning, water heater to the washing machines, refrigerators ... ... Which is to buy a home can be used directly? .Air-conditioning to be installed inside and outside the machine, water heater pilot to fly through the water power, to try to run the refrigerator, washing machine should be connected to every kind of water ... ... is not the money you are able to immediately dig in handy. .<BR> <BR> This also is a "necessity" category of home appliances, audio as a luxury of life, to play the best work results, there is no detailed preparation work and installation is absolutely impossible. .<BR> <BR> <BR> <BR> From the choice of rooms for the room began to sound like a barrel for the wine, the right size pattern of the room can make the proper sound system sound even more pure and honest deliberation. .Slightly larger than the listening room space for all low frequency sounds in a very good extension, you can also make sound more alive. .<BR> <BR> Pattern of an average family room, usually used as a listening room area of 15-20 square meters, in order to study these patterns more common, of course, if conditions allow, a large number of rooms will be .more appropriate. .Because a large space can weaken the wallof sound interference sound in the sound field in favor of the reduction, while a large space is also conducive to the performance of low-frequency sound. .However, to do with the living room listening room is not very appropriate, because usually more chaotic pattern of the living room, listening position often can not be set in the best position. .The living room while the hallway leading to the formation of various rooms of the asymmetry of space, a wall of windows will cause some big bass loss. .It is worth mentioning that the best listening room is not square, top height should not exceed 3 meters (though the top is so inclined, study the listening room can only be selected in the other room.) .If handled properly, this room will have a good sound. .<BR> <BR> In the choice of the room, avoid the four walls of the room there were two equal adjacent surface, or one side is twice the other side. .This means that if the room as a rectangle, then the aspect ratio of the square pattern of the room and the room for the 2  1 is not taken. .Because this pattern will make the room more prone to standing or low-frequency acoustic resonance, the sound of the original characteristics of interference. .<BR> <BR> Interior room is important <BR> <BR> within the listening room and other rooms are different. .Generally, a professional sound-absorbing material for the listening room is based on the use of the room reverberation time, sound-absorbing material parameters to choose. .Different materials have different sound-absorbing character, for different frequencies have different sound absorption. .For example, thin plywood, wood for better absorption of sound frequency, and gypsum board in a class of objects known low-frequency sound absorption in more. .So in other words, if a room only with a sound-absorbing material, then the whole room only for a specific audio frequencies more efficiently, while for others it appears that the lack of voice-band processing. .So select the sound-absorbing material for the entire room when  must, from the whole. .Sound-absorbing materials, some of the regular vendors will provide some data to the sales, purchase, when you can get the vendor at the relevant information. .<BR> <BR> The ceiling and floor, the processing means and the wall is different than the floor is usually treated in terms of the acoustic wall on the "hard" a lot, but not be suitable for "soft" transformation .. .So if your home is ceramic tile or wood floor, you can choose the listening position in the appropriate size placed a wool carpet. .Although carpet is small, the sound waves between the roof and floor has a good absorptive capacity. .But unfortunately, the blankets are usually low-frequency sounds for low frequency sound and nothing to do, only better high-frequency part of the processing power. .<BR> <BR> The structure itself if the room is not very satisfactory, the use of sound-absorbing material or the size of a single bad too, then built in the interior is very vulnerable to acoustic standing wave. .We also mentioned earlier, standing wave will change the sound characteristics of the original, though the larger the impact of standing room is usually smaller, but does not mean there is no standing wave problems. .But standing is also very simple to solve, is to avoid placing items in the room symmetry. .<BR> <BR> The overall layout of the view, especially the audio part of the main speakers and center speaker, then the best side walls of the Ministry of "hard" and some outside walls do not have sound-absorbing material, if the sound power of small ., gypsum board can be waived, so as to help the listener into the sound wall. .<BR> <BR> Between the listener and the speakers left and right sides, must have excellent sound-absorbing material to enrich the walls, in general, can be glass fiber cotton, and so avoidthe sound of speaker after reflection by the walls of human interference .direct effect of the ear to hear the speakers. .In the rear of the listening position, the same can not appear too "hard" walls, in addition to a certain degree of sound-absorbing capacity, the back wall also need to set the proliferation of special structure. .As a general family, go to the market to buy ready-made spread sheet much, the one does not look good, accounting for space; Secondly, many of the family arc surface, convex, slope of the spread of things to achieve results. .You can condition themselves. .<BR> <BR> Low-frequency sound <BR> <BR> to special treatment under Generally the sound wavelength is greater than 100Hz 3.4m, this means the pattern and size of the room at one level, so the only sound inside the room .Several resonance frequency, low-frequency sounds in different frequency bands Mutual interference phenomenon is relatively small, so the full rich low frequency sound. .Also among the subwoofer sound is usually not too directional, so the position in the room did not affect the sound. .<BR> <BR> What is reverberation? .<BR> <BR> Ears in many audio players often sounded a word - reverb. .For entry-level players, the reverberation in the end what is it? .<BR> <BR> First difference is that the reverberation echo is completely different with different things. .Is an acoustic echo returns immediately after touch to the phenomenon of the object at close range very faint echo of sound attenuation, so a smaller change in intensity. .Reverberation is the sound of all the objects within the room and face, human body formed by repeatedly reflecting the gradual decay of the existence of the phenomenon of sound. .The degree of reverberation and sound absorption is directly linked to the room, reverberation time, the sound filling the appropriate full, long reverberation time is a lively, slightly longer reverberation time is even more beautiful music. .So many of the concert hall reverberation time longer, the control in two seconds, while the Opera House, the outstanding performance of the human voice, thus the control of 1.5 seconds. .<BR> <BR> Family sound debugging process, the reverberation is an important part of the reverberation time is usually set according to the room to control between the 0.4 to 0.5 seconds. .Some listening room, not only once after entering the voice of the outside world, and even listening who are find it hard to speak for themselves, which indicates that the acoustic room, doing a little bit too far, reverberation is too short, as if speaking in the open prairie, the lack of sense of the scene .. .<BR> <BR> Generally the effect of reverberation depends directly on the sound-absorbing layer, if the sound-absorbing layer so thin, you may have tapestries, shelves to be remedied. .However, if the sound-absorbing layer made of thick, then the remedy up to more trouble. .So the question back to the room interior, the sound-absorbing layer must be a lot of careful construction, the best will in the beginning of the tapestry of sound-absorbing capacity of shelves into account, so even if the deviation of Attraction, the latter is also relatively easy to remedy them .. .<BR>.