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| No.8478590
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Information Name: | Supply Qingdao Public Broadcasting |
Published: | 2013-09-27 |
Validity: | 30 |
Specifications: | |
Quantity: | 0.00 |
Price Description: | |
Detailed Product Description: | Public broadcasting is a limited range of public service broadcasting. In normal circumstances, the public broadcasting signal through the broadcast service area laid broadcast transmission lines, is a one-way (downstream of) cable broadcasts. Usually set in the communities, organizations, military units, businesses, schools, buildings, supermarkets and a variety of venues within, for publishing news and inside information, publishing schedule signal, providing paging and background music as well as for severe accident forced into emergency broadcasting and so on. Thus becoming a modern metropolis and urban public spaces integral part. I believe in the 9.11 incident shocked the world, before the collapse of the World Trade Center, the Public Broadcasting System will save lives in the process plays an important role. Background music systems background music system is based on listening to music, people are not aware of the location of the sound source, the thrill of having a small irritant makes the sound as a design goal. The design indicators: Interior uniform sound pressure level SPL = average noise level + (3 ~ 5) dB frequency band 100 ~ 12000Hz, reproduction characteristics relatively straight, band may be appropriate to decrease. l Emergency Broadcast System Emergency Broadcast System is based on listening to people anywhere hear a clear, accurate sound as a design goal. The design indicators: average indoor uniform sound pressure level SPL = 88 ~ 94dB band at 100 ~ 6000Hz, replay feature relatively straight, band sharply. In addition, "civil design specifications JGJ/T16-92" Section 24 "Fire alarm and fire control" on page 4, "fire broadcasting", designed for emergency broadcasts made clear. |
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Copyright © GuangDong ICP No. 10089450, Core Network Technology Co., Ltd. Qingdao thinking All rights reserved.
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You are the 4981 visitor
Copyright © GuangDong ICP No. 10089450, Core Network Technology Co., Ltd. Qingdao thinking All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility