Improving Classroom Speech Clarity in High-Altitude Schools in Qinghai

Year: 2026

Products: Line Array speaker System

Model: Model EA15

Project Overview

Schools in Qinghai Province face unique acoustic challenges due to their high-altitude environment and the acoustic limitations of many existing classrooms. Excessive reverberation, uneven sound distribution, and reduced speech intelligibility can make it difficult for students to hear lessons clearly, especially in larger classrooms.

To create a more effective learning environment, over 100 classrooms across multiple schools were upgraded with Audfly's Classroom Sound Field System.

The Challenge

Many classrooms in the region experienced poor acoustic conditions that affected both teaching effectiveness and student learning.

Common issues included:

Excessive reverberation that reduced speech clarity
Uneven sound coverage between the front and back of the classroom
Students in rear seating areas struggling to hear lessons clearly
Teachers needing to raise their voices throughout the day
Feedback and distortion problems caused by conventional amplification systems

These challenges not only impacted classroom communication but also increased vocal strain for teachers during daily instruction.

The Solution

Audfly deployed its Array Loudspeaker System, designed to deliver balanced and consistent sound coverage throughout the learning environment.

Using advanced sound field distribution technology, the system evenly projects speech across the listening area while minimizing unwanted sound reflections from walls, ceilings, and other surfaces.

The solution allows teachers to speak naturally without the need to continuously raise their voices, ensuring that students in every seat can hear lessons clearly and comfortably.

The Results

The upgraded classrooms achieved significant improvements in speech intelligibility and listening consistency.

Testing showed that the sound pressure level difference between the front and rear seating areas was kept below 2 dB, providing a more uniform listening experience throughout the classroom.

Key outcomes included:

Improved speech clarity across the entire classroom
More consistent sound coverage for all students
Reduced teacher vocal strain
Lower risk of feedback and audio distortion
A more comfortable and effective learning environment

More than 100 classrooms have successfully implemented the solution, providing schools with a scalable approach to improving classroom acoustics in challenging educational environments.

Products Used

✅ Audfly Array Loudspeaker System

Conclusion

Clear communication is essential for effective teaching and learning.

This project demonstrates how Audfly's Array Loudspeaker System can improve speech intelligibility, reduce teacher fatigue, and create a more balanced acoustic environment.

Interested in Balanced Sound Coverage?

Whether you're designing a classroom, training room, lecture hall, university campus, conference room, or corporate learning space, clear and consistent sound distribution plays a critical role in communication and engagement.

Discover how the Audfly Array Loudspeaker System delivers balanced sound coverage and improved speech intelligibility across a wide range of learning and presentation environments.

Explore the Array Loudspeaker System

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