Introduction to public address (PA) system (View - 2161 times)
November 2, 2016 10:19 am
A public address (PA) system is an electronic amplification system used as a communication system in public areas. It also refers to an audio transmission system used in institutional and commercial buildings, in which input from a microphone or prerecorded music is amplified and sent to speakers throughout the premises. These types of PA systems are commonly seen in schools (used to read announcements and summon students). Some systems can address specific rooms and exclude others.

Communication Systems used for large scale institutions expose to the fact of conveying massages only for the particular sections during particular periods. Requirement is to partition the whole area into several number of zones for the communication purposes and isolate the zones as and when required. This report presents the development of a low cost public address system for large institutions with the ability of isolating each of the zones in the premises in which it is installed and further isolating individual speaker within the zone giving more flexibility for communication purposes.
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We have selected to develop a low cost public address system suitable for large Institutions, as nowadays it is becoming major requirement for large institutions. In our project we have focused on developing a public''' ....Read More
November 2, 2016 12:13 pm
Dual Tone Multi-Frequency (DTMF) is a method of instructing a telephone switching system to dial telephone numbers, or to issue commands to switching systems or related telephony equipment. It reliably sends the data across long''' ....Read More
November 2, 2016 10:32 am
When user has selected the appropriate zone that he wants to send the message using Graphical User Interface (GUI), main controller will generate Dual Tone Multi Frequency (DTMF) tone containing the zone and the exact''' ....Read More
November 2, 2016 10:30 am
Even though large institutions like schools, hospitals, etc has the same requirement only private institutions can afford this kind of facility due to high cost. Hence we have minimized the total cost, while fulfilling all''' ....Read More
November 2, 2016 10:23 am
A public address (PA) system is an electronic amplification system used as a communication system in public areas. It also refers to an audio transmission system used in institutional and commercial buildings, in which input''' ....Read More
November 2, 2016 10:19 am
Total cost is the summation of cost of main controller, cost of zone controllers and cost of cables, speakers and installation. For a design with16 zones, the cost for the Main and Zone controllers is''' ....Read More
November 1, 2016 10:30 am