What is a physical barrier to communication?

Physical Barriers consist of any sound thatprevents a person from being heard. Physical noise interferes with a speaker's ability to send messages and with an audience's ability to receive them.

\Other physical blocks include mumbling, speaking too fast, distracting gestures, noise inside the room such a ringing telephones etc - or outside the building such as traffic or aeroplanes.n

Your message may be blocked because people in your audience are uncomfortable, they cannot hear because of bad sound system and cannot see because of inadequate lighting