Weak current College】 【relationship of Pro sound box.

A similar case in point: we all know that the sound driver and in the case of ties, many people will foreign famous original horn cells including modulus acquisition came back, but I do not in any case a good speaker, the main reason is that the box of acoustic structure was not that professional audio engineering in sound field design is like making speakers so important when design box, a good sound field design is like making speakers so important when design box, a good sound field will sound equipment advantages into full play out, let people sounds very comfortable, and a reasonable sound field not only does the wonderful sound of feeling, but also to reduce the level of performance of the device, of course, because of architectural decoration level, and user awareness of sound engineering, many project very late and sound construction units, so that the sound field design cannot complete, sound field design and must rely on architectural decoration, so a large number of sound engineering is the lack of sound field design is essential, only sound design and construction units fully recognizes the importance of sound field design, can make users aware of its importance.

A basic sound field design including sound processing, noise reduction, site architecture, realization of acoustic uniformity, acoustic fibrillation focus, feedback, and other problems of avoiding, indoor, etc., the following classification for analysis.

(1) the processing of sound insulation

In order to create a quiet acoustic field, avoiding the surrounding environment and residents in the beginning of the sound field design, should first consider the handling of sound insulation in order to provide a better sound field of congenital conditions, sound processing involves building and the outside world of sound, construction within the room sound insulation; acoustic parts including: wall of sound, the sound insulation of doors and Windows, the same room at the top of the top acoustic ceilings, etc.

For the sound insulation with the outside world, professional audio General architectural structure can meet the basic requirements of sound insulation, but if the design-time architecture has not considered the needs of sound engineering, will conduct a survey of sound insulation, when necessary, should be given to building design units, to the public security authorities understand local noise restrictions, etc. Usually do not reach the height used for the sound engineering for the sound insulation between rooms, if the wall is too thin to project a certain degree of difficulty, the opportunity to consult with the decoration of the units in the decoration of the walls when you add another layer of insulation to resolve in the high-frequency sound.

Low band sound to thoroughly address is difficult, because in addition to increasing the weight of the sound body, no other more effective ways, doors and Windows are soundproof with weak links for their sound can be proposed to the decorative units and doors production quality and, if necessary, the use of leather bags and double-glazed doors, or door to increase isolation channel and window hanging thick double curtains, etc., for the same room at the top of the ceiling top sound more critical, especially in recent years the construction of large entertainment, its Hall of reproducing the effect of the surrounding rooms are large, some disturbing is coming from the top of the ceiling, this part of the sound scheme cannot be made too late, it will be difficult to implement, requires sound designers made as early as possible to the decorative flat, coordinating a feasible option, for example: in the ceiling above and then covered with a layer of fire versamat or in the ceiling above a certain distance between the top and then add another layer of ceiling, etc., in short, the works of sound processing is of great significance, both to improve the quality of the project and facilitate the user's normal use, and care should be taken to carefully consider whether acoustic treatment, treatment is necessary, otherwise it will increase the number of unnecessary work and cost.

(2) field noise reduction

For the scene background noise is not for many people, but in national standards were made in the corresponding requirements, e.g. level of stars should be less than 35dB, level disco should be less than 40dB scale, that is why: background noise increase correspondingly reduces the sound reinforcement system of signal to noise ratio affects the quality of the project, in order to effectively address this problem, the professional audio and sound insulation of the previously mentioned restrictions, such as: Central conditioning of air outlet noise is to install the unit helps resolve; exhaust fan noise, size, installation location is properly and so on.

(3) of the building structure

It should be said that the General professional audio is the ability to let the building structure is not completely in accordance with their intentions, but the strict quality requirements for engineering, construction works are conducted on rebuilding the structure of part, sound designers are necessary to make the corresponding requirements, including structural elements of the length, width and height of the best ratio of wall shapes, sets the position of the control room, in front of the master plan has already been mentioned, here are saying and engineering installation related to building local structure, you must first obtain building units on audio engineering requires hoisting device for wall or roof of the load-carrying capacity, especially the lamps shed weight lifting is the larger, more important security; secondly you need to have the room structure in architecture, embedded pipeline location, there are more detailed for export, to the benefit of possible construction profile of the tube, wiring, in addition to building the internal structure of weak links to learn more, find out what the landlord can change, what place does not work.

(4) the implementation of sound uniformity

The concept of acoustic uniformity, professional audio usually not very clear, the project is not too much to consider, is not important? no, not only important but also very important, for example: you encounter so to a recreation Hall, found the scene throughout the sound is different, some parts of the music is beautiful, but also as something that sounds shortcomings erratic; for example: in front of the stage area volume is very large, while the back of the audience said sound small (and of course some entertainment Hall is designed to let viewers easily after area of) these phenomena are uniformity is not good, in the national standard, it is to sound field not uniformity of concepts to the table with the General requirements of the field pressure level test value deviation is less than a 2dB, how to implement a uniform sound field? first building structures should be no obvious defects, such as: the room is not allowed to have too many columns and walls should be avoided trap arc, especially the stage side walls cannot have greater structure; not in sound reinforcement within large acoustic shadow areas, but due to the construction stage decoration finished cannot do a lot of changes to meet those requirements, in sound engineering should make full use of experience, ingenious arrangements sound reinforcement area, avoid larger defect structure, will they impact to a minimum; second, you can decorate a timely and efficient manner to provide some simple improve sound diffusion effect of programmes, for example: all Concert Hall has a very good sound diffusion effect, due to its internal use of a large number of various shapes of sound diffusion, and that these structures can be done by some simple decoration method to complete, so as long as the method for properly should be able to reach better results, of course, to the diffusion of the shape, location, number of reasonable proper design is not an easy thing, generally more economically viable solution is to use wall cement la hairy method, although this method is relatively old and not very beautiful, but it spread to the halls of the sound can be very effective, moreover, reasonable arrangement of the sound system, in particular speaker set-up must strictly required, if the design could use some speaker manufacturers of computer design software for acoustic field simulation is supplemented, if not, you should actually adjusted until the scene of best sound field.