Let's say, you are going to make a political meeting
on the square. You have some prediction of the number
of participants, but you can't know the exact quantity.
Of course, you will use some sound amplifiers and
acoustic systems in hope everybody to hear you, but
the most far listeners will experience difficulties
trying to understand what they hear, because of wind,
public transport sounds and other environmental noise.
Trees, buildings and other things between the speaker
system and the listener's ear will distort the sound,
probably will add echo, reverberation, etc.
In addition, some of event participants can be hard of hearing,
or people who don't know the speaker language good enough.
The best thing, you can now broadcast your speech
to any number of listeners and each of them will be
listening for you like if you are speaking to her/him personally.
Clear sound, and interactive functions will enhance
your event's level, making it more interesting and