Indoor Acoustic Testing Services
Absolute Laboratories provides independent, on-site indoor acoustic testing services for completed buildings across Singapore. Our testing helps developers, contractors, architects, and facility managers verify acoustic performance, meet project specifications, and ensure occupant comfort.
Our Indoor Acoustic Testing Services
1. Airborne Sound Insulation Testing (NIC / NNIC / ASTC)
Measures the sound insulation performance between adjacent rooms — evaluating how effectively walls, doors, glazing, and partitions reduce airborne sound transmission. Results are reported as NIC, NNIC, or ASTC ratings (equivalent to STC/Rw in other standards).
Typical applications: Offices, meeting rooms, residential developments, hotels, hospitals, educational facilities
2. Room Noise Assessment (NC Rating)
Measures indoor background noise generated by HVAC systems and building services to evaluate occupant comfort and compliance with project requirements. Results are reported as NC (Noise Criteria) ratings.
Typical applications: Offices, boardrooms, classrooms, hospitals, hotels, commercial buildings
3. Reverberation Time Measurement (RT60)
Measures the time required for sound to decay within a room after the source stops. RT60 data helps evaluate speech intelligibility and overall room acoustic quality, ensuring spaces are comfortable and meet design expectations.
Typical applications: Lecture theatres, auditoriums, meeting rooms, classrooms, worship spaces
Why Indoor Acoustic Testing?
Poor acoustic performance affects occupant comfort, productivity, privacy, and overall building quality. Common problems include:
- Poor speech privacy — conversations clearly heard between adjacent rooms
- Excessive background noise — HVAC or mechanical systems generate disruptive noise
- Poor speech intelligibility — excessive reverberation affects communication and clarity
- Client complaints after occupancy — acoustic issues discovered too late
- Costly rectification works — delays and added expense at project handover
Independent field testing provides objective data to identify issues early and verify performance before handover.
Industries We Support
- Commercial Buildings & Offices
- Residential Developments
- Educational Facilities
- Healthcare Facilities
- Hospitality Developments (Hotels & Serviced Residences)
- Industrial Facilities
We work with main contractors, developers, architects, interior designers, facade contractors, partition contractors, M&E contractors, and building owners.
Why Choose Absolute Laboratories?
- Independent & impartial — objective results you can rely on
- Experienced acoustic engineers — qualified team with professional consultation
- Calibrated equipment — professional instruments meeting international accuracy requirements
- Internationally recognised standards — ASTM E336, ASTM E413, ANSI/ASA S12.2, ISO 3382-2
- Comprehensive technical reports — clear, detailed, easy-to-understand
- Fast turnaround — efficient testing and timely report delivery
Contact Us
Have questions or need a quotation? Get in touch with our team today.
- Email: klenplir@alab.com.sg
- Phone: (65) 6296 8012 Ext 30 | DID: (65) 6544 8594
- Mobile: (65) 9754 6848