Design Scheme of Playground Sound System

First, the design goals
Playground sound system is mainly for sound reinforcement, both audio and other audio and video audio signal transmission, the focus of consideration in the design of the speaker sound field sound pressure uniformity and sound clarity.
Second, environmental requirements
1. Playground set up separate voice-controlled room, sound control room located in the stadium on the ground floor.
2. Stadium for the open structure, to consider the sound waterproof, moisture, loss prevention and other issues.
3. The opposite of the stadium has been set up two tone speakers, the column and the campus radio and stadium sound system interconnected.
4. All pipelines need to be re-laid, but pay attention to concealment.
Third, the design method
According to the arrangement of outdoor function and the positioning of the use of our focus on sound reinforcement, so that the sound field to meet the sound field uniformity, to meet the requirements of sound pressure in combination with the proposal, we design the speaker is the playground usually performances US C-MARK pressure limiter, the United States S-MAKE amplifier function, the United States C-MARK power supply timing power management functions, according to the national outdoor (the United States C-MARK power amplifier function, Acoustic characteristics of sound reinforcement system design criteria, in the quasi-peak state of the steady state of the maximum sound pressure level:
1.Language sound reinforcement system level standard should be greater than or equal to 90dB;
2. Sound field inhomogeneity do signal frequency 1.0KHz and 4.0KHz when measuring less than or equal to 8dB;
3. Acoustic gain in the 125Hz-4.0KHz the average is greater than or equal to -8db or more national standards, we designed the audio PA system must meet and exceed the national standards to reflect the superior performance of the system. Sound system sound effects, should be able to meet the above GYJ125 outdoor sound reinforcement system design acoustic characteristics of the language and music in both a standard, in order to achieve a clear language, no distortion, sound pressure margin, sound field distribution, Silent feedback whistle.
Fourth, functional overview
Sound field sound reinforcement using the United States C-MARK AT-3703 main speaker 4, set in the podium, hanging distribution, its smooth power response and excellent sound quality can also make it very good to adapt to near-field work. The speaker unit consists of a 15-inch woofer and a 44TI treble plus ultra-high sound composition, plus four T-KOKO CS-850 sound column to fill sound effects. The same kind of unit composed of the speaker box sound is difficult to match, can easily cover the audience. Speaker with a hanger to facilitate the installation of local environment, the microphone using the Taiwan BBS U-1100 to send words, microphone sound clear, suitable for performing performances.

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