Face-to-face or personal communication is one of the richest channels of communication that can be used within an organization. Physical presence, the tone of the speaker's voice and facial expressions help recipients of a message interpret that message as the speaker intends. This is the best channel to use for complex or emotionally charged messages, because it allows for interaction between speaker and recipients to clarify ambiguity. A speaker can evaluate whether an audience has received his message as intended and ask or answer follow-up questions.
TV, radio and loud speakers all fall within the broadcast media communication channel. These types of media should be used when addressing a mass audience. Businesses seeking to notify customers of a new product may advertise or do promotions using a broadcast channel. Similarly, a CEO may do a global company address by having a television feed broadcast across global sites. When a message intended for a mass audience can be enhanced by being presented in a visual or auditory format, a broadcast channel should be used.
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