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Pages 20 (5020 words)
A public address system comprise of a combination of several units used for the amplification of audio voice for the purposes of enhancing audibility of spoken information. In addition to reinforcing the sound, the public address system is also used for recording music, distributing the sound in large venue system, for training in large institutions, in airports to broadcast vital information, in public building and large commercial centers for the purposes of broadcasting information at these centers…
This necessities the use of a public address system(PA). The PA system requires special design as they must be tailor made to meet the client's specifications and wants. It is therefore necessary to design the PA systems using an organized procedure such as the Pahl and Beitz method. The process involves the surveying of the customer's needs and wants, generating some demands and wishes from the client, developing of the solution using a function analysis matrix and finally developing the product using the information from the demands and the function analysis. After the development of the product, it is tested for its overall suitability particular in satisfying the customers wants and needs, if the product is found unsuitable or with some limits, it is necessary to redesign and reconfigure the product to ensure that it satisfy the customer needs and promotes usability engineering and ergonomic principles.
The power supply: This is the system that supplies the public address unit with electrical power that is used to run the whole PA system. ...
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