Weak current College】 【learn how to configure and use 5.1 channel speakers --- Power By】 【China power house network.

<br> <br> 5.1 sound processing is more perfect sound solutions to meet a computer game and family video of Super requirements, the traditional two-channel sound so quit advanced audio stage. In order to give full play to the multichannel capabilities, you .must clearly understand how to configure and use the whole system. <br> <br> 5.1 channel's brief <br> <br> 5.1 channel into pre-recorded and game two. Prerecorded has been widely used in various traditional cinema and home theater, .some of the more famous voice recording compression formats like Dolby AC-3 (Audio Coding 3, the third generation audio encoding), DTS, etc are 5.1 sound system modelled for the technology. 5.1 left (L), (C) and right ( .R), left rear (LS), the right rear (RS) five orientation of the sound output, so that people like the feeling of being near the concert hall. This five-channel independent of each other, including ".1" channel ., is a specially designed subwoofer channel, this channel can generate frequency range 20 to 120Hz of subwoofer. In fact, 5.1 sound system from 4.1 surround, except that it adds to a home cell. The central unit is responsible for the transmission of voice signals .below 80Hz, admiring the movie will contribute to strengthening the human voice, the dialogue focused in the middle of the sound field to increase the overall effect. <br> <br> DVD movies in addition to the video picture quality than VCD high a lot ., even more important is their original sound field. To set the sound field effects in the movie, and never is the second speaker was able to achieve, at least four speaker is a basic requirement of sound field, six-channel speaker unit in the .overall performance of the whole range. Because this application involves the Visual and auditory scene, for the movie sound field rendering will have very high requirements, if not to a multichannel speaker group matching, movie playback of sound field accuracy and authenticity can be questioned. .<br> <br> Game 5.1 mainly 3D positioning, from sound field effect in terms of traditional 3D positioning sound effects for the front, left and right sound positioning is very clear, but in the rear and a high level of sound, it may .be because everyone's feelings depending, for 3D games, is undoubtedly a very unfavourable factors, because the game can only see the front sight, for other locations of dynamic must rely on the sound to grasp, if will trumpet into four-channel or more products ., this problem will be solved. <br> <br> The correct sound field need a sound card and speakers to work together for the first half of 1999 had a certain claim to support the 4-channel sound card, but measured before know that .it is the original two-channel signal a copy into the rear two-channel, as a result, the front and rear are naturally sound the same, is not a true sense of the four channels. Only use real support 5.1 sound card and speakers ., and keep the angle, height, distance, and rear left and right channels of connection is correct, you can restore the sound field and realistic. <br> <br> 5.1 system was born, proclaimed prior to this, such as APX, .Spatializer 3D, Q-SOUND, Virtaul Dolby, Ymersion, A3D end-to-peer technology, it has reached the real 3D surround sound effect. In General, the realization of the game 5.1, you only need a sound card and speaker, 5.1 .if you want to play, but also images 5.1 requires a Dolby decoder. <br> <br> DVD 5.1 channel <br> <br> Notably, the Dolby DIGITAL (Dolby Digital sound effects) are not entirely 5.1 channel, it is only .a digital recording of collectively, broken down into: <br> <br> 1, DDM, ie Dolby DIGITAL, Dolby Digital Mono to mono sound; <br> <br> 2, DDS, ie Dolby DIGITAL Stereo, Dolby Digital 2 - .channel audio; <br> <br> 3, DDS, Dobly DIGITAL Surround, Dolby Digital surround sound, dual-channel memory, surround to Mono, a total of five channels; <br> <br> 4, Dolby DIGITAL 4.0, ie .Dolby Digital surround sound 4.0, quadraphonic storage, surround as independent monaural audio, five-channel; <br> <br> 5, Dolby DIGITAL 5.0, ie Dolby Digital surround sound 5.0, five-channel storage, rear surround is independent dual mono, .a total of five channels; <br> <br> 6, Dolby DIGITAL 5.1, ie Dolby Digital surround sound 5.1, six-channel storage, surround is independent dual mono, six-channel; <br> <br> DTS, ie DIGITAL .Theater SYSTEM, digital theatre system, it uses and different compression techniques AC-3 will surround sound stocks to play DVD, shall follow the specific system, can be hidden in the DVD release of 5.1 channel. DTS and Dolby DIGITAL 5.1 maximum difference between using .different "algorithm", Dolby DIGITAL 5.1 will same information under less, take up minimum space. DTS does not deliberately pursue the highest compression ratio and therefore also have the opportunity to save more of it, if done right, can provide better than Dolby's expressiveness .. <br> <br> DVD sound storage, in addition to Dolby DIGITAL and DTS Digital surround sound, there are European MPEG 2, SONY SDDS development, or to high-quality stereo-based PCM digital format, but the present DVD main or .Dolby DIGITAL and DTS to record sound, and create rich surround effect. <br> <br> Maybe you have heard it THXIs the United States large Director George Lucas's movies playing standards, its purpose is to improve the cinema movie sound playback level so that .the audience can feel the Director attempts to express. Therefore it on cinema space and all audio equipment has very stringent requirements, or even play the brightness of the screen when you have certain requirements, and cinema in THX's license after you must also accept review every .six months, so that the equipment does not conform to the standard aging. THX specifications and later also from cinema to home cinema equipment, and with the same stringent specifications, there are many vendors meet THX standard AV equipment. A set of completely by THX .specifications AV system consisting of equipment should be able to achieve the following results: the full range of treble and bass, sound more smooth nature, within the scope of the hearing at least bass distortion, clearer voice positioning. <br> <br> Get .THX-certified equipment is very expensive, and most of them have to match the audio equipment to Hi-End its effect, is therefore usually have THX effect of family system, the most expensive price. <br> <br> Configure 5.1 channel system .<br> <br> Speaker list, not a messy way to put it next to a computer. In order to highlight the effect, on 5.1 each speaker's position has strict requirements. PC system services to individuals, not absolutely the same as the home .theater to placing speakers, however, still have one simple rule: treble speaker in height, the low bass sound. <br> <br> Front speaker to the word of the way to face the listener placed around a speaker, respectively, of the .speakers on the monitor before the desktop or the top of the monitor. Front speakers and the height of the speakers as much as possible the same, and the three speaker positive should be in the same plane, or reset the speaker in a bit backwards, .but its positive should be parallel to the front of the front speakers. Front left speaker distance and position of the listener, in normal view location, the speaker and the listener's angle to 45 degrees. <br> <br> Surround speakers in the listener's .side, two speakers to face towards the listener, two speakers and listeners of the same distance, and the two speakers placed above the listeners sitting head above 60 ~ 90 cm. The second scenario is the listener behind the wall hanging speakers, surround speakers toward .the front or face to face. <br> <br> Human directed to accent-insensitive, bass speakers of a substantial and more freely. However, the PC speaker of low-frequency range is not an imagined so low, or placed in front .of the listener is better on the ground. If the bass speaker resonance phenomena occur, that is, turn up the volume after abnormal vibration of sound, you can install the pads, or placed in a sub-woofer, and other heavy objects on top .of the book to eliminate resonance. <br> <br> Sound and speakers placed <br> <br> From the audio source is issued directly to the listener to the sound of the sound waves is called. <br> <br> Because .sound waves during the transfer process in various directions to a certain extent, so when we appreciate home theater program, issued from the audio sources via the most acoustic room walls, ceilings, etc. objects reflection to our ears, the sound transmission through the reflection .is called reflections. <br> <br> The earliest your ears of reflections is a reflection of sound. A reflection of sound as a Sonic reflection time is short, so it's Sonic shape and direct sound very close. <br> <br> .Delay mixed noise is a reflection of sound after reaching your ears of reflections, while transmitting non-directional, so if there is too much delay mixing sound, will seriously affect the playback sound clarity. Number of delayed mixing sound and listening environment shapes, dimensions .and materials of building materials. <br> <br> Will satellite placed in left interior wall is distant location, it is easier to get good sound playback effect, not only the natural timbre and sound image positioning also better, while sound sense of space .and depth of feeling more strongly with regard to the Council. The reason is so placed in speaker, after the sound directly (direct sound) reach your ears, with the later from indoor walls and ceilings after reach your ears reflection of sound (reflected sound .) and in time there is an obvious difference. The time difference between the best of not less than 10ms. Only in this way, the human brain will have enough time on the original sound signal for complete analysis, in order to avoid interference of early .reflections. <br> <br> If in a very short period of time to hear those reflections, the human brain will put these reflections as part of the original sound, easy to make the sound space characteristics become blurred. From this characteristic of the .human brain, the speakers are placed at a distance of approximately 0.6m after the wall, from the side wall approximately 0.9m (this is a ratio that can be dynamically changed), easy to get better sound playback effect. <br> <br .> Placed after going for volume adjustment, allowing the listener seated felt the sound level of each speaker are equal. If surround speakers is closer to the listener, the volume control must be reduced, not noisy, in order to obtain balanced sound perception. < .br>.