【 Weak current College 】 room decoration ([eleventh article] video of sound field)---Power By 【 China power house network 】

[Eleventh article] video of sound field a HI-END system in replay audio sources, the existence of sound elements in distribution problems in three-dimensional space, the phoneme is sound elements, refers to a time sound synthesis group in the performance of units independently, such as one of the human voice or a musical instrument sound. The brain is an organ of associative thinking rich, three-dimensional space through various sounds in the distribution of clear, we can think out issue these phonemes of singer or band of musical instruments in the space of the stage of actual distribution, just as in the present form a stage performance image, this phenomenon is called "audio", therefore, if we've comments "timbre" to the music of auditory language, "audio-visual" is a visual image of music. And establishing HI-FI, a start is combined with audio and video, HI-FI system when the audio source should be replayed render clear audio as superior to the previous "Advanced" on the radio or on portable recording playback machine. Therefore, as a HI-FI or higher level of HI-END system, on audiovisual with very demanding requirements. On these requirements, we can be summarized into the following four areas for discussion, namely: the sound field, resolution, weak signal reproduction and texture, etc. The problem we will always friends, today we'll discuss the sound field. We used as a video quality evaluation of sound field "is a more generalized essentials, it refers to the three-dimensional distribution of phoneme. Including the size of the audiovisual stage space. In the room where the pauses in the audio and video, on the stage and audio-visual space around the stage and the atmosphere of transparency. AV stage size and location, you can mark the location of the boundary of the phoneme distribution. Sound field in addition to the wide, deep, high-dimensional sound field in front of the curtain sites in dotted reaches a distance of listening I is also an important location factor, it can measure the sound field of forward or rearward. HI_END level equipment on sound field of vision requirements is the sound field should be briefly is equal to the actual performance of the sound source, the sound field edge reaches the domain listener distances should be equal to half of the field width as well as soloist or solo should stop listening the preface of Singapore, as there is any deviation or dynamic swing is not too far away from the central line, it is very important. The last important requirement is: phoneme in sound field distribution in space, i.e. should have uniformity in the sound field of phoneme distribution only depends on the source information for the Guide, from sound field effects of spatial location appears dense a thin piece of phenomena, like a television screen, should not be a part of the color television special thick or special light, in particular the special deep or shallow, or a part of the "pixel" special extrusion or special vegetable. Of the above sound field is an ideal sound field, in the General House is not easy to fully realize, this is because it not only with the equipment itself (where speakers of the most important, followed by a power amplifier), but also on sound source software contain sound field information, depending on room size and structure, as well as speakers in the room set-up, in listening to the seat and the speaker's relative position and height, etc., these are not just equipment investment can solve the problem was. Many homes living room or bedroom and small and irregular, generally also cannot alone be used as a room, but also display a variety of things, so the speaker set-up is very difficult to want, even only sew pins, often due to structural asymmetry on the left (for example, the left is the wall to the right is a window to the right or left side of the bed is the door, etc.), these are the correct sound field of the formation of extremely bad effect. Therefore, the primary issue is to ensure better sound field in listening to the center of the face, often more substantial adjustment left channel volume balance knob until you feel the sound. As regards the speaker in the Interior of the display method, some shaoyou "317" rule, it was also suggested some rules, which means we will be in other programmes of the time to introduce friends, some of the high-end speaker in the place indicated on the specification, these rules have some reference value, but in practice for your listening environment and speaker speaking and not necessarily the best, not necessarily work. For example, if you need a speaker on 1/3 the length of a place with room, only in the professional listening room can be achieved, as other purpose room so drop speaker will be the way, therefore, all depends on their own local conditions repeatedly practice and efforts to put a one can sell or further belongs to the better sound field. The preceding speaks to sound field scale and audio equipment of relations are very close, although its importance is slightly inferior to the set-up and the room structure. First speaker and sound field are self-evident, generally high-quality loudspeaker manufacturers in the design of the speaker is fully taken into account, such speakers as long as reasonable, would display better sound field. As for the amplifier performance, the effect of the sound field is not small, power amplifier power, the greater the ability of forming sound field, and finally, let's talk about the transparency of the sound field space and atmosphere, this really belongs to a very delicate issue, novices were to be some intermediate shaoyou terms are often difficult to realize, in order to understand this problem, we can take one of the world famous concert hall of live recordings in replay it on your system, if it so that people can listen like sitting live concert in the concert hall, not only hear a stereo sound Symphony Orchestra, and obviously could feel such a performance is a very radical tables and transparent environment for playing in the background, in the music space even turn the music sounds and front the audience into a sigh are very realistically reproduced (of course, this also involves we will talk about small signal reproduction), but once the Orchestra Philharmonic players, drum vibrations, as wanma Chin forces entered a high tide, the strong musical theme and concert hall space walls echo form an extremely spectacular sound (that is, we often say ambience) give a very relevant experience personally feel, which reached HI-END equipment on the transparency of audiovisual space around the stage and the ideal atmosphere. Of course, experienced shaoyou know that sound field is completely empty wall-out room, otherwise there would be no "sound field and depth, to arrive at on street" message, but the sound fieldAfter all, the range is inclusive of a band, a concert hall to accommodate the entire atmosphere is very difficult, therefore, we should be realistic and objective treatment a HI-END sound system.