【 Weak current College 】 room decoration ([tenth article] chats isolation)---Power By 【 China power house network 】

Years, where enthusiasts, or to set himself up as enthusiasts for their listening environment for some processing to improve listening conditions, and it was beautiful. So someone in the wall hanging tapestries, in the corner on two SOUND TUBE. There are also some bought some expensive SONEX left on the right. While some will buy some "Seahorse" sponge cushion (of course cheaper!) but they can come up with similar results. There are some more, like the author did a decade ago, up to a big heap Sheng eggs used in the paper card, then put them on different colors, and then in the walls, ceiling, a stick, the effect is quite good. There is also a friend listen to me, at home in a different location, drop a few pots of plants, if you get sound good, other family members of acceptance will be high. Well, this is basically all initiatives, has played the role of tuning, at the most, could only be sound-absorbing effect and never played the role of sound insulation. Why say? this is a lot of enthusiasts of illusion, we all thought that since the sound absorption, it is not far away? but cruel reality is this: sound absorbing went just people of wishful thinking, Yes, the above initiatives, to really suck? quot; a bit of "sound, but the amount of absorption and the remaining comparison, it is negligible. 　　Strictly speaking absorb sound is the sound of the sound energy is transformed into another energy (usually the heat), in the listening room, if referring to absorb the energy of the sound, the engineer would smile and say, this can be ignored. But if you are a serious enthusiasts, noise may have on you have a deeper meaning. In the professional recording and Kam-listen to the occasion, the sound is a very important issue, which also has many universities to ask. Here I give a simple example, when we listen to music with headphones in view, in addition to the acoustic field outside of this pointer, you will find, regardless of the frequency domain, or transient, dynamic, slender degrees etc music can easily outperforms our House speaker. 　　Both why different? it involve a lot of reasons, but one that is both noise conditions are very large. We generally at home listening to the HiFi and sound pressure maintained generally some 90 to 102 dB, and then a loud family or neighbors would complain. Here, on the one hand, the acoustic pressure Universitys, near 110dB is general domestic ceiling in this range of equipment is very prone to tiredness, but on the other hand, as listening to rhymes, but once a long time exposure to high sound pressure, our ears is able to bear pressure limits, so our auditory sensitivity, such as analytical capabilities will become dull. In General, urban home, their environmental noise is not low, there is also a minimum of approximately 40dB, as in Hong Kong this bustling and densely populated, even more than this number. Thus we see that if we listen to music at home, and sound pressure is maintained at the neighbors can accept 100dB, minus the noise level (Noise Platform), so the remaining 40dB available only on dynamic 60dB. Generally speaking there are available on dynamic 60dB has been pretty good, only equipment, in particular the speaker, in the limit is often inaccurate, then we will feel the sound is very good. If you want to improve on the dynamic, such as increased to 65dB, sound pressure CAP will have to have, then equipment 105dB nonlinear distortion will be expanding exponentially increment, but your hearing at 105dB down more than wonderful, both together and you will feel annoying noises. Here, the wise readers might have thought, why not put the noise level down?, if the noise level reduction of 35dB, 5dB, namely maintaining 100dB sound pressure on the ceiling, are dynamic, and above 65dB 105dB, equipment and our sense of hearing and not in a State of fatigue, so listen to the sound quality will be better than at 40dB maximum noise level and acoustic pressure at 105dB with an order of magnitude improvement. Readers are also very clear in that case the sound will be better. 　　To reduce the noise level, will have to turn to the sound. We know that on this planet, sound transmission is essentially in the air. So there is no air vacuum everything will become silent. A reader would disagree, because in his system, Dolby Digital 5.1 Star Wars appreciation of the law when it is the ground shakes. Sorry, you cheated to film. 　　The real star wars, only silently in silence. To sound, simply, is to cut off the path of the sound transmission. This reason simple and easy to understand, but you'll have done well, it's not easy. 　　Now that sounds by air conduction of sound, to prime condition is to listen to the sound of the indoor air and outside air cut off, in other words it is the listening room sealed up. Split air conditioners should try to install a larger number of horse, this machine long-term in slow case able to cope with, because of the mechanical noise will also be less, on the other hand to maintain the listening room fresh air supply, air conditioners of cooling capacity even bigger. We have to note that general window type air conditioner has a fresh air supply equipment, but there is no split of the equipment that is more generally they didn't think so too, so for the sake of your health