COMMUNICATION (Physical) 5)
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A physical process in which a material transmitter emits in a well defined code some signals which can be decoded by an adequate receiver.
Voices or sounds, musical or others are transformed into electro-magnetic waves and reconverted to sounds by a telephone or an audio-set.
Thereafter the sounds are received by our hearing system and converted from sound waves to sensations.
Similar processes allow for the transmission of visual signals, for example through a television chain.
These processes are completely independent of whatever meaning the signals may be intended to convey. Here, coding is a biunivocal physical transformation whose efficiency depends on avoiding perturbing noises or compensate them by adquate repetitions (= redundancy).
Any type of physical communication needs the following elements: an emissor or sender, an encoder, a channel, a receiver and a decoder, and… of course, a source of energy. Generally the communication process must also be monitored in order to ensure its correctness.
Categories
- 1) General information
- 2) Methodology or model
- 3) Epistemology, ontology and semantics
- 4) Human sciences
- 5) Discipline oriented
Publisher
Bertalanffy Center for the Study of Systems Science(2020).
To cite this page, please use the following information:
Bertalanffy Center for the Study of Systems Science (2020). Title of the entry. In Charles François (Ed.), International Encyclopedia of Systems and Cybernetics (2). Retrieved from www.systemspedia.org/[full/url]
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