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11. Sound eLearn.Punjab
Animation 11.7 : Importance of Acoustics
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This is due to multiple reflections called reverberations. In the design of lecture halls, auditorium,
or theater halls, a balance must be achieved between reverberation and absorption. It is often
advantageous to place reflective surfaces behind the stage to direct sound to the audience.
Generally, the ceilings of lecture halls, conference halls and theatre halls are curved so that sound
after reflection may reach all the corners of the hall (Fig 11.11).
Sometimes curved sound boards are placed behind the stage so that sound after reflection
distributed evenly across the hall (Fig. 11.12).
Fig. 11.11 Curved ceiling of a conference Fig. 11.12 Soundboard used in a
hall. big hall.
16 V: 1.1
