Professional noise measurement

Professional noise level measurement

Not sure how much noise you really have?

🎧 Professional Noise Level Measurement – EU Standardized Testing

Not sure how much noise is actually transmitted through your building elements?

We offer professional sound insulation measurements using Class 1 reference equipment from Norsonic, in full compliance with European standards. Our tests follow the EN ISO 16283 series for field measurement of sound insulation and EN ISO 3382 for reverberation time.

🔍 What we measure:

• Airborne sound insulation (DnT,w) using an omnidirectional loudspeaker
• Impact sound insulation (Ln,w) using a standardized tapping machine
• Reverberation time (RT60) to assess the acoustic character of the receiving room

After the on-site measurements, you’ll receive a standardized report that shows how much sound is transferred between rooms and how the room’s acoustics affect the perceived noise. These results can be used both as a baseline before treatment and as a verification of effectiveness afterward.

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📐 Noise Classification – EU-based Performance Classes

Although building regulations vary across EU countries, most follow similar classifications aligned with EN ISO 717-1 and EN ISO 717-2, using DnT,w for airborne noise and Ln,w for impact noise. Countries may implement these differently through national annexes or building codes, but the underlying principles are comparable.

Typical Classification Guidelines (indicative ranges):

Class	DnT,w (Airborne insulation)	Ln,w (Impact sound)
High	≥ 55 dB	≤ 48 dB
Medium	≥ 52 dB	≤ 53 dB
Basic	≥ 50 dB	≤ 58 dB
Low	< 50 dB	> 58 dB

These are indicative targets often used in residential, commercial, or educational buildings, depending on the required comfort level and national regulations.

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ℹ️ What Do DnT,w, Ln,w, and RT60 Actually Mean?

• DnT,w (Airborne sound insulation): Measures how well a wall, floor, or ceiling prevents airborne sound (speech, music, etc.) from passing to adjacent rooms.
  📈 Higher is better.
• Ln,w (Impact sound insulation): Assesses how much structure-borne sound (footsteps, dropped objects) passes through a floor.
  📉 Lower is better.
• RT60 (Reverberation time): The time it takes for sound to decay by 60 dB in a room after the source is turned off. High RT60 makes noise more noticeable and “echoey”.
  📉 Lower RT60 generally improves speech intelligibility and comfort.

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🔧 Measurement Equipment and Scope

We use Class 1 instruments, the highest classification per IEC 61672, with calibration before every measurement cycle. Reports are intended for guidance and project documentation, but not as legal evidence unless explicitly agreed upon in advance.

⚠️ Please note: For legal disputes or official certification, a local certified acoustics consultancy specialized in building code compliance or litigation should be engaged.

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🎯 Each Project is Unique

While we provide expected product performance based on lab-tested Rw values, actual performance in buildings (field measurement: DnT,w) depends on many factors:

• Flanking transmission (sound traveling via indirect paths)
• Weak links (doors, windows, ventilation)
• Room acoustics (hard vs. absorptive surfaces)
• Structural resonance and building rigidity

Our analysis always includes recommendations tailored to your specific situation, with a focus on cost-efficiency and impact.

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📍 Available in Oslo and Across the EU

For projects in Oslo, you can place your order directly here >>
For EU-based or international projects, please contact us for a custom quote.

Also, check out our detailed whitepaper on our measurement methodology and soundproofing approach – it’s a great resource to understand what drives real-world performance.