Acoustic design of a hall

The initial sound from the source should be of adequate intensity so that it can be heard throughout the hall. For bigger halls sound amplification should be installed.
The sound produced should be evenly spread in the hall so that sound foci and dead spots be avoided.
The boundary surfaces should be so designed such that there are no echoes or near echoes.
The boundary surfaces of the rooms and halls must be so designed that the optimum amount of reverberation is achieved and all the unwanted sound is absorbed.
The absorbent materials should be evenly distributed over the wall surfaces of the hall.
In case of conference halls the acoustics of the halls should be designed to ensure proper conditions for listening, assuming that the person may listen or speak from anywhere in the room.
In case of music halls, the treatment should be such that the initial sound generated from the source reaches the audience with the same intensity and frequency.
The outside noise or unwanted sounds must eliminated with proper insulation.