One of the key factors, as illustrated in the Shannon-Weaver model, is feedback. It is only through the feedback of the receiver that the sends to the sender, whether, the feedback could be direct (said out loud by the receiver or pin-pointed by him) or it could be interpretive (facial expressions) where the sender will have to realize on his own what the receiver is thinking and counter it with possible solutions. Advertisers get this feedback through market research, politicians through public opinion polls, etc.

Another important component in the success of a message that is being sent is the decoder/decoding process,...

which is jus like encoding for the sender; the efficiency of the decoder/decoding process also plays a huge part in the creation or avoidance of semantic noise.
Semantic noise is a growing and grave hindrance in the process of communication than most people give it credit; two most effective ways to avoid facing this barrier, as aforementioned, are the steps taken mutually form the receiver and the sender; the receiver can help with the efficient setup of decoding the message, while the sender can help with the use of efficient ways to get feedback and give out prompt positive responses to those feedbacks.

Semantic noise