Acoustic Alarm System of Golconda Fort

Introduction

• Location: Near Hyderabad
• History: Earthen fort in the 7th century AD, expanded in the 16th century under Sultan Quli Qutub Shah's rule
• Importance: Significant in trade and South Indian politics

Use of Acoustics

• Acoustic Alarm System: Audible up to 3 square kilometers
• Technical Usage:
  • Use of sound for fort's security
  • Earthen pots for sound reflection
  • Diamond-shaped indentations in the ceiling
  • Alarm system signaled security through sound

Architecture of Golconda

• Extent: Spread over an area of 11 kilometers
• Structure:
  • Four districts, several gates, palaces, mosques, and baths
  • Major architecture integrating acoustics
• Direction of Sound: Accurate distance of walls and doors, precision between gates
• Feature: Sound redirects without losing intensity

Other Acoustics Marvels

• Gol Gumbaz:
  • Located in Bijapur, one of the world's largest single chamber structures
  • Architecture: Indo-Islamic blend
  • Whispering Gallery: Transforms sound into echo
  • Unique Echo: A single voice echoes for 26 seconds

Importance of Acoustics

• Ancient Technology: Remarkable structures without modern technology
• Science of Sound: Use of sound's curve linear propagation
• Architectural Acoustics: Ability to travel sound on a curved path

Conclusion

• Ancient India's structures are unique examples of science and knowledge
• Use of acoustics as symbols of both security and love