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Noise can be divided into three sub categories; external, internal, and semantic. External noise can be considered factors outside of a person that distracts them during communication. Typically it is the sights, sounds, smells, textures, and environmental factors. Internal noise can be one's thoughts or feelings that interfere with communication. Or in many cases, daydreaming, feeling tried, and illness. Semantic noise: Reactions aroused unintentionally by symbols or words, causing the listener to abruptly focus on an unrelated topic. In many cases the main reason of this occurrence is a poorly developed speech, in terms which the presenter did not fully understand or most likely underestimated the intellectually or the feelings of the audience. Most common forms of this noise are discriminatory remarks, red flag words, and controversial symbols.

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