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A signal may be considered as an interruption in a field of constant energy transfer. An example is the dots and dashes that open and close the electromagnetic field of a telegraph circuit. Such interruptions do not require the construction of a man-made field.The frequency of the received signal differs from the frequency of the signal that was transmitted. (The Doppler effect in radar is similar to the change in audible pitch experienced when a train whistle or the siren of an emergency vehicle moves past the listener.) A moving target will cause electronics, any change in a signal that alters the basic waveform or the relationship between various frequency components; it is usually a degradation of the signal. Straight amplification or attenuation without alteration of the waveform is not usually considered to be distortion. Amplitude distortion refers to unequal amplification or attenuation.that either converts an electrical signal into sound waves (as in a loudspeaker) or converts a sound wave into an electrical signal (as in the microphone). Many of the transducers used in everyday life operate in both directions, such as the speakerphone on certain intercoms.the time required for electrical signals to travel over wire interconnections. This is a difficulty both for the integrated circuits themselves and for the connections between them. Under the best circumstances, electrical signals can travel in a wire at about 90 percent of the speed of light. A more usual.
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An Essay About Introduction to Communication
Communication is a process whereby information is enclosed in a package and is channeled and imparted by a sender to a receiver. The receiver then decodes the message and gives the sender a feedback.This is the formal way to explain communication.Means of communication as different ways but we can define 4 ways of communication; forms, medium, the media , other kinds. Communication provides make friends and connects people to each other. People make communication in order to make things happen in our lives. People must learn communication like other skills and abilities. Also we use communication to inform, persuade and entertain each other. On the other hand communication is means of expressing our culture and our beliefs. People use communication to provide their needs and purposes. Maslow explain this needs and purposes as a pyramid. Basic needs are at the bottom such as food, shelter, sex. The other needs are surviving physically and social beings, feeling secure and valuing by others, being involved with others in relationship, giving and receiving information, expressing ourselves, making sense of the world. In addition communication comes from 2 ways. They are genetic interitance(nature) and learning(nurture).
The other important issue is messages are rarely neutral, messages may be overt or covert and that messages are usually multiple. The term ‘message’ can be divided into three parts: content, code and treatment. Inter personal communication is different way of communication between two people. People use strategies when choosing their words to achieve some purposes. Games is other strategies for manipulating other people. People’s relationships are defined by the ways that we use communication, for better or for worse. Also there are many categories of social situation.
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