RP Goenka International School – Kolkata
Case Study: RP Goenka International School – Kolkata
Integrated Ceiling & Wall Acoustic Treatment with Wooden and Felt Panels by MMTPL
Project Overview
Client:
RP Goenka International School
Location:
Kolkata, India
Total Area Covered:
480 m²
Scope:
Acoustic treatment for classrooms, halls, and learning spaces.
Objective:
Improve speech clarity, reduce reverberation, and enhance the aesthetic appeal of learning areas for a world-class academic environment.
Acoustic Challenges
1
High Ceiling Reverberation: The ceiling height caused excessive echo and delayed speech clarity during lectures and group sessions.
2
Large Wall Surfaces: Uncovered wall reflections increased background noise levels and reduced intelligibility.
3
Educational Standards: Classrooms required compliance with recommended RT60 values (< 0.6 sec) for clear communication.
4
Modern Aesthetic Requirement: Materials needed to blend seamlessly with the school’s premium interior design.
Solutions Provided by MMTPL
Wooden Perforated Acoustic Ceiling Panels
Placement: Full ceiling coverage in learning spaces.
Performance: NRC 0.70 (with insulation backing) for balanced sound absorption and diffusion.
Enhanced speech clarity by controlling overhead reflections.
Design: Natural wooden finish matched the school’s architectural aesthetic.
Mirage Felt Acoustic Wall Panels
Application: Installed on classroom and hall walls for speech-focused absorption.
Performance: NRC 0.40 at 12 mm and 0.50 at 18 mm, PET-based panels for mid-to-high frequency control.
Thickness: 12–18 mm.
Aesthetics: Multi-tone Mirage groove designs added visual depth and texture.
Acoustic Screens & Paneling on Walls and Partitions
Function: Added localized sound absorption near high-reflection zones and served as decorative partitions.
Performance: Controlled cross-reflection between opposite wall surfaces, enhancing focus areas.
Execution
Treated ceilings with wooden perforated panels backed with mineral wool insulation.
Installed Mirage felt panels strategically on walls to meet absorption requirements while complementing the décor.
Added acoustic screens and partitions in open areas for zoned acoustic comfort.
Results
RT60 Reduction:
Achieved <0.6 seconds reverberation time, ideal for classrooms and auditoriums per international school acoustic guidelines.
Speech Intelligibility:
Clear voice projection even in larger rooms, improving student comprehension.
Premium Interiors:
Seamless blend of wooden ceilings and vibrant felt panels enhanced the school's architectural character.
Materials Summary
Wooden Perforated Panels (Ceiling):
NRC 0.70 with insulation backing.
Mirage Felt Acoustic Panels (Walls):
NRC 0.40 at 12 mm and 0.50 at 18 mm, PET-based, with grooved designs.
Acoustic Screens & Partitions:
PET felt, multi-use absorptive dividers.
Coverage Area:
480 m² of treated learning spaces.
Significance of the Project
This project exemplifies how integrated ceiling and wall acoustic systems can transform educational spaces into clear, comfortable, and visually premium environments, meeting global learning space acoustic standards.