The following text discusses architectural acoustics.
Concert halls require careful acoustic design to optimize sound quality. Parallel walls create standing waves that distort certain frequencies. Angled surfaces and diffusing panels scatter sound more evenly. Modern concert halls increasingly use adjustable acoustic elements, allowing venues to optimize settings for different types of performances.
What is the primary purpose of the text?
To argue for renovating older concert halls
To compare famous concert halls around the world
To explain acoustic design principles and innovations
To provide instructions for musicians performing live
Correct Answer: C
Choice C is the best answer. The text explains principles (parallel walls cause problems, angled surfaces help) and innovations (adjustable elements).
- Evidence: The text explains physics: "Parallel walls create standing waves," "Angled surfaces... scatter sound." It mentions innovation: "adjustable acoustic elements."
- Reasoning: The passage is technical and informative, focusing on how the design works.
- Conclusion: The purpose is to explain principles and innovations.
💡 Strategy: Summarize: The Physics (how sound works) + The Tech (adjustable elements).
Choice A is incorrect because renovation isn't argued. Choice B is incorrect because specific halls aren't compared. Choice D is incorrect because performance instructions aren't given.