The syndrome ‘boring voice’, associated with monotone expression is a habit into which it can be easy to lapse. Keeping one’s voice interesting, vibrant and in resonation territory is important,. This is especially the case when topics are seriously challenging. Monotonish voice is a sure fire shut off, negatively impacting the comprehension of listeners.
Nasalisation, that is speaking through one’s nose, can be equally off-putting to listeners. While cultural; and dialectic differences impact on nasal speech, aiming for enunciation to be as clear as possible is important.
Facing the audience can be easily overlooked. When speakers move, speaking side on or even back on to the audience can happen. This is a presentation characteristic that must be avoided.