Ancient Greek theatres, such as the one at Epidaurus, are renowned for their extraordinary acoustics, which allow spectators in the highest rows to hear actors clearly without amplification. For decades, popular consensus attributed this phenomenon to the shape of the theatre's seating tiers, which acts as a natural sound filter. A recent study, however, challenges this singular explanation by analyzing the physical properties of the materials used in construction. Researchers discovered that the highly porous limestone of the benches plays a far more critical role than previously understood. This limestone structure acts as a natural sound trap, absorbing low-frequency background noises—such as the rustle of leaves or the murmur of the audience—while reflecting the high-frequency voices of the actors back toward the seating area. While the curvature of the amphitheater certainly helps direct sound waves, it is the selective filtering by the limestone material that prevents the actors' voices from being drowned out by ambient noise. Thus, the acoustic clarity is a result of a sophisticated interaction between geometry and material science, rather than spatial design alone.
Which of the following statements best summarizes the main idea of the passage?
- The exceptional acoustics of ancient Greek theatres are the result of a combination of physical design and the acoustic properties of the building materials.Cevap
- BPorous limestone benches trap low-frequency sounds such as audience murmurs while reflecting the higher frequencies of the actors' voices.
- CAncient builders selected construction materials primarily to ensure the long-term preservation of outdoor entertainment venues.
- DRecent scientific research has disproved the theory that the curvature of the amphitheater helps direct sound waves.