The walls, ceiling and floor of a good auditorium are covered with some fibrous material, carpet, glass fiber etc. Its purpose is
The walls, ceiling, and floor of a good auditorium are covered with fibrous materials like carpet and glass fiber to prevent echo by absorbing sound. These materials dampen sound waves, reducing reverberation and ensuring clearer acoustics for the audience. By absorbing sound rather than reflecting it, they improve the overall sound quality and intelligibility within the auditorium.
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The purpose of covering the walls, ceiling, and floor of a good auditorium with fibrous materials like carpet and glass fiber (option [D]) is to prevent echo by absorbing sound. Echoes occur when sound waves reflect off hard surfaces and bounce back, creating unwanted reverberation that can distort speech and music.
By using sound-absorbing materials, such as acoustic panels, carpets, and fiberglass insulation, the auditorium reduces reverberation time. This improves the clarity of sound, enhances the music or speech intelligibility, and creates a more comfortable listening environment for the audience.
Additionally, these materials contribute to the overall acoustic design of the auditorium, ensuring that sound reflections are managed effectively. This acoustic treatment is essential in optimizing the auditory experience during concerts, performances, lectures, and other events held in the auditorium. Therefore, the correct answer is [D] to prevent echo by absorbing sound.