User:U3573541/Public Address system with IP-based function
Background
A public address system (PA system) is a system which amplifies and announces messages to the public. It is widely used in public venues where it is required to broadcast or to inform the public. A small PA system can be used in lecture halls, churches, while a big PA system is applied in transport stations, hotels and stadiums.
The PA system includes many functions and takes hotels as an example. The functions consist of fire linkage, remote paging, television sound function, etc. The infrastructure of the typical PA system consists of speakers, amplifiers and microphones. Traditional PA systems make use of copper wire cable for communication. However, due to the emergence and widespread use of the internet, PA systems also switch into internet protocol based (IP-based). This page will discuss the details of IP-based PA system in terms of its system design, functionality and possible developments.
System design & essential components (including both hardware and software)
Hardware:
Software:
Functionality, benefit, safety & security, limitation
Functionality:
Benefit:
Safety and Security:
Limitation:
Existing applications and Possible developments
Possible deveopment
Turn into wireless
Existing PA system, either traditional or IP-based one, still relys on cable connection. Traditional PA system makes use of both network cable and aux cable. With the help of network switches, IP-based version could be further reduced to using network cable only. However, cabling still cannot be ignored during installation of PA system. With the help of wireless technology, the PA system can get rid of most network cable.
In a normal IP-based PA system, a network switch is connecting the control computer and other mixer amplifiers.
By connecting each swtich and amplifier to a wireless device, for example a WIFI router, the system is given more freedom and easier to install.
(picture ver. B)