【 Weak current College 】 sound system design overview

Sound system design is a process, not a product. If it is a product, it can be mass produced and available for many devices, like amplifiers or micro-damper. A specification to satisfy the requirements of the occasion, often cannot be fully met, and for many users the use of the performance is also very poor. The design process consists of many fragmented data collection process, just like a puzzle game in a fragmented picture while the assembled them together so that they shall not overlap or gaps.
Then, in the end how to design a sound system? some people do like to roll many audio product catalogue sheet, and then like throwing DART Board that is used to draw the strokes; some people do like a walnut shell rummage, until you find the Walnut meat; whereas some of them are easily calculate answers very difficult equation. Just like the sacred ritual held, then it is usually thousands of listeners to determine a simple cone 8 inches speaker (203MM).
Four design tools as successful audio system designers;
The first tool is known;
Now the designer is the designer of 25 years ago to be lucky because now there is extremely rich in sound engineering knowledge sources you can use. Many, or even numerous reference books completely covers the various aspects of the field (DavisandDavis, 1987; Giddings, 1990; Ballou, 1991).
There are a variety of available journals, academic publications to publications and newsletters and periodicals like commercial magazines. There are a variety of prestigious academic exchanges, seminars and training courses available from various research institutes, including our industry trade association, the National Association of sound and artistic material obtained from. Individual access to accredited colleges and universities have begun to provide related courses. From these channels, you can get extremely large amounts of knowledge. But knowledge itself, is not enough. Therefore, the
The designers of the second tool is experience;
A person is often said that we all learn from others shave his face — in the us to clearly grasp our sound equipment is able to meet the advanced level, we often have to break many amplifiers and speakers. This argument was reasonable. The third tool, which is by far the most important tool that is good judgment. Designers must have a good understanding of people, can make more than the technical details of the judgment can be made into human inner space of the judgment. A technically accurate design, it may be because the Assembly who do not know how to assemble, or because the user does not know how to use but failed. The actual users may not know how to use this system, the manufacturer may because there is no ready alternative products and stop continue production of a model of the product.
The fourth tool, in the past decade it has become especially important is the computer. Specific to audio and acoustics design software, computer simulation technology (CADS) can greatly speed up the design speed, making their own designers Toolbox in occupies a seat. However, here it is important to remember that the computer is not my own design, designers I can design audio system. There was a gambler to a computer programmer to ask, is it possible to make a computer program that can predict who will make the game's horse, this programmer replied: "of course, this is very easy, just assume that a horse is spherical ..." three guidelines for success in many aspects of the audio system is similar, but each failed sound system failure of would be the same, that is, its design is unique. Users determine the success of the sound system, a famous guidelines: sound is big enough? sound is clear and easy to understand? sound will contribute to a sound cloud? sufficiently large stereo system, you can achieve success in a short time, but eventually will lead to the consumer's dissatisfaction.
Compared with the past, the present is a relatively small problems. Modern materials and modern manufacturing techniques, keep the speakers in the fire or damage before more sound pressure level. Amplifier manufacturers have also made a copy of their contributions, they can provide more than ever, but less expensive audio power. Present audio system designers must also protect the user's listening. This is a kind of progress, the sound is too large for the audio system's voice after all isn't big enough than the sound of the sound system of sound increases to more easily. A sound is clear and easy sound system, although you can achieve success in a short time, but soon also cause not men.
Can't hear "Johnahinthewhaleknew" and "Jesuswillnotfailyou" the difference between the two sentences in the lyrics of vague, makes the sound system become waste, regardless of this audio system enables the chorus singing a nice sense of music. Audio system if the sound feedback is an instant effect of failure, there is no reason you can forgive that. This is a design failure, instead of component failure. Even better than cause tweets much lower voice feedback that will make the room become more voice echo, so that needs to be volume than the original design. As audio system designers, you use all possible means, so that the audio volume is large enough (but do not suggest that there is a risk), the audio sound clear and easy to understand, and most important things to do in sound system design failed one of the reasons is that the designer did not fully understand: users to the use of their sound. Designers must first determine the sound system is how to use, it is used to do.
This process is the architects say find user process. This looks easy, but really it is very difficult, in the consumer groups, different people have different answers. For example, church musician and the priest on the audio system will have a completely different idea. You have to do with each comparison sound system-related personnel. To fully recognize that users may have on their own to do what no oneClear-minded, but if they encounter a regular usage, but you didn't consider to allow them to do so, then this is your error. You should apply your experience and judgment to meet the real needs of users, even users did not think of needs.
Typically, asking to use the audio system, what are they particularly like, what are they particularly do not like, this is a useful method. Then is the next step is to investigate sound system will work in the building. Understanding the structure and materials of the building. Determination of the noise, if construction has not yet been completed, you find heating, ventilation and air conditioning (HVAC) engineer, asking them to screen in the form of the value of the expected environmental noise. If you have no access to the report of the environmental noise, you want to go all out, close understanding HVAC noise, do not let go. Learn about other parts of the building, whether it is remote control needs, such as speech Hall of auxiliary speaker, or Chamber of the audio system. Speakers and amplifiers and then the next step is to design the layout of the speakers Assistant, such as the center speaker layout, learn about satellite delayed-type layout also assigned type speaker layout.
Each layout system has its own advantages and disadvantages, and you have chosen system must meet various parameters variables. At this point to the speakers in the room. You can buy the speakers and have them installed up to evaluate, but relatively easy (and secure) way is to use a computer simulation of the room and the speaker to experiment.
Today's technology to keep you CADS can expect sound distribution and clear understanding of the speech. If you are not satisfied with the results you expect, you can test different equipment layout. When you identify the speaker, then select the amplifier to properly start these speakers. Not only the power to the amplifier is large enough, and amplifier voltage-current characteristics (V-1) must also match the load with the speakers. 100W power transmission into an 8W speaker-amplifier, and required 100W power transmission into an amplifier 2W speakers are the same. You select the amplifier must also meet the requirements of the reactor, the speakers delay measurement instrument across the composite impedance loudspeakers, detect the required maximum V-1 phase offset, measured values and amplifier original maximum limit V-1 phase offset. Inspired by the thought of now have, on the project guide published by the amplifier manufacturer products of maximum V-1 phase offset value, and has inspired thinking, to guide the work of the speaker manufacturer also began to publish their products of complex impedance value. If you do not see this information, please provide them on request. The remaining is signal processing equipment selection and amplifier and speaker matching signal processing equipment.
For example, you select the amplifier and speaker, you may need to signal processing equipment for electronic filter processing. If you had to choose not to be against sound feedback speaker layout, you may consider to select appropriate micro-damper for redress. Play your choice of signal processing equipment must meet users ' requirements. Some people may need large console; while some people may need automatic mixer; some users might need programmable, can switch the equalizer to different programs for reinforcement. Select use micro-damper, is to choose the sound for different acoustic processing. For micro-tone, sound system, users may have a very strong preference, but be sure to enable them to reject a micro-Manager before you try. Don't forget that other programs may require a different way.
Other and so on many engineering matters one Division, the "other" and the "etc." is the reason of failure, but for audio systems engineer, but you must always pay attention to the "other" and "and more" categories of subject matter.On the consumer, this audio system is too expensive? whether user's technical staff is too difficult? what is appearance? architects going on speakers look interesting. You write some kind of statement? you write each manual should have a basic features. In the design of a building project, you have to write a clear statement of all the various components, including their potential use and results. If your design is used for the purpose of the tender, in the statement that only allows the use of the product, or your direct approval of the "equivalent", or that cannot exceed the device's performance. This last provision to provide a product of the contractor also undertakes to achieve sound performance requirements.