Norsonic Nor278 Reference Sound Source (RSS) for Soundpower measurements Nor278 Reference Sound Source (RSS) for standardized acoustic testing The Norsonic Nor278 is a high-power Reference Sound Source (RSS) designed for standardized airborne sound insulation and room acoustic measurements in buildings. It delivers stable, broadband acoustic output with excellent spatial uniformity, enabling repeatable and comparable results across test sites. Optimized for field work, the Nor278 pairs seamlessly with precision sound level meters and analysis software to support fast, compliant measurements in accordance with international standards. Key Features Broadband acoustic output covering key octave and third-octave bands for building acoustics. High and stable sound power for reliable signal-to-noise ratio in challenging environments. Uniform radiation characteristics to minimize position sensitivity and improve repeatability. Rugged & portable design for frequent field use, transport, and rapid setup. Standards-ready performance aligned with ISO building acoustics methods. Applications Nor278 is engineered for professional building and room acoustics workflows where a stable, broadband source is essential for standardized tests. The long-form copy below is written for SEO while remaining practical for consultants, laboratories, and facility managers. Airborne Sound Insulation (Walls, Floors, Doors) — Generate a controlled, repeatable sound field on the source side when measuring level differences across partitions. The Nor278’s broadband spectrum supports robust third-octave analysis, improving accuracy in determining single-number ratings and frequency-dependent performance of walls, façade elements, and floor/ceiling systems. Room-to-Room Transmission Testing — Achieve consistent excitation levels for field tests in apartments, hotels, offices, schools, and healthcare facilities. The high and stable output helps overcome background noise and ensures reliable results even in large volumes and partially furnished rooms. Façade Insulation & Building Envelope — Support measurements of exterior-to-interior noise transmission by providing a reference signal indoors (or in controlled setups), enabling more confident assessment of curtain walls, windows, and façade assemblies under real-world conditions. Room Acoustic Characterization — Provide excitation for responses used in deriving parameters such as reverberation time (T20/T30), clarity, and spatial uniformity checks in classrooms, lecture halls, multipurpose spaces, and studios. The Nor278 assists in verifying acoustic treatments and commissioning of new builds. Laboratory & On-Site Commissioning — Standardize acceptance testing for building handover and quality assurance programs. With durable mechanics and consistent spectral output, the Nor278 helps teams compare results across projects and over time with traceable methods. Standards & Compliance Workflows — Use as the reference excitation source in test methods aligned with international standards (e.g., ISO building acoustics series) and local regulations, helping streamline documentation for clients and authorities. With its robust build, dependable spectrum, and ease of deployment, Nor278 supports fast, repeatable building acoustics surveys and helps stakeholders achieve predictable outcomes in design validation, troubleshooting, and compliance reporting. Video Datasheet Download Datasheet (PDF) Ordering & Support Brand: Norsonic Model: Nor278 Distributor: Placid Asia Request a Quote Norsonic Nor278, Reference Sound Source, RSS, building acoustics, room acoustics, airborne sound insulation, façade insulation, transmission loss testing, ISO building acoustics, third-octave analysis, reverberation time, commissioning, field measurements, acoustic testing equipment