As an architect you are an emotional being, however most architects see themselves more of an objective personality, while they often find that other architects are far too emotional. This is nothing special and occurs with all professions that have a tendency for objectivity. This pattern is referred to as the hot-cold empathy gap or the emotional gap. The basic idea is that we underestimate of emotions in our own behaviour and instead overemphasis in the behaviour of others.
So when we are talking with others we see ourselves as very objective, even if all other participants disagree. The bad news is that there is no way we can unplug that filter and see ourselves in the same way as others see us, without technical help such as of a recording. You might have once recorded your own voice and then replied it firm the firm belief afterwards that the recording equipment must have been faulty, as your voice sounded anything else you could recall. The same happens if we record ourselves and with todays smart phones this is really not a problem.
If you however watch yourself do not do it alone, as this often can trigger an aversion against your own behaviour that may actually inhibit you to speak in public. It is important to chose someone that was already at the event, so that there is nothing new for the person and that when will doubt the recording he can back it up. Usually after repeating this for three times you will change the emotional output of your presentation to the better. However if you should experience any anxiety, please consult your local doctor.