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Sound Level Meter

Room Acoustics Measurements with Nor145

Single-channel solution for ISO 3382 room acoustics measurements.

Overview

The Nor145 room acoustics measurement solution offers a cost-effective approach to ISO 3382-compliant room acoustic assessment using Norsonic's single-channel Class 1 sound level meter. While the dual-channel Nor150 is the premium choice for comprehensive room acoustics surveys, the Nor145 provides all the essential capabilities needed for reverberation time measurement and basic room acoustic par…

Key Features

  • ISO 3382-2 compliant room acoustics measurements for ordinary rooms
  • Reverberation time parameters: T20, T30, EDT with real-time decay curves
  • Single-channel impulse response capture and analysis
  • 1/1 and 1/3 octave band frequency analysis
  • Cost-effective alternative to dual-channel room acoustics systems
  • 4.3-inch touchscreen with intuitive smartphone-like interface
  • GPS location tagging for documented measurement positions
  • Nor850 Room Acoustics module compatibility for professional reporting

Applications

  • Classroom reverberation time assessment for educational standards compliance
  • Auditorium and lecture hall acoustic verification
  • Mosque and worship space reverberation evaluation
  • Office and conference room acoustic treatment assessment
  • Restaurant and hospitality venue acoustic comfort checks
  • Building handover acoustic commissioning for standard rooms

Technical Specifications

  • Analyzer: Nor145 (single channel)
  • Standards: ISO 3382-2
  • Parameters: T20, T30, EDT
  • Method: Interrupted noise, impulse

Frequently Asked Questions

  • What are the advantages of single-channel room acoustics?
    Single-channel operation is simpler to set up, requires less equipment, and costs significantly less than dual-channel systems. The Nor145 is suitable for most standard room acoustic measurements per ISO 3382-2, making it ideal for routine reverberation time assessments in classrooms, offices, and similar spaces.
  • Which parameters can the Nor145 measure for room acoustics?
    The Nor145 measures reverberation time parameters T20, T30, and EDT across 1/1 and 1/3 octave frequency bands. When data is processed in Nor850 software, additional parameters such as clarity and definition indices can also be calculated from the captured impulse responses.
  • When should I choose the Nor150 over the Nor145 for room acoustics?
    Choose the Nor150 when you need simultaneous dual-channel measurements, STI (Speech Transmission Index) measurement capability, advanced impulse response analysis, or when working on performance spaces that require ISO 3382-1 compliance with more complex source-receiver configurations.

Application Guide

The Room Acoustics Measurements with Nor145 belongs to the Norsonic Sound Level Meter range. See the Sound Level Meter application guide for system configuration, compatible accessories, and applicable measurement standards.

Related Norsonic Products

Why Norsonic?

  • Manufactured in Norway — decades of acoustic measurement heritage; all instruments designed and built in Norsonic AS, Lierskogen, Norway
  • IEC 61672 Class 1 — highest accuracy class for professional and regulatory acoustic measurement
  • International type approvals — PTB (Germany) and LNE (France); accepted by environmental authorities across the region
  • 3-year manufacturer warranty — covers parts and labour; Norsonic Asia authorized service center support throughout the region
  • Open data formats — .nox files work with NorReview and can be exported to CSV, Excel, and third-party analysis software

Calibration and Compliance

  • All Norsonic instruments require periodic IEC 61672-3 calibration — Norsonic Asia provides factory-authorized calibration services with full DANAK-traceable certificates
  • Calibration interval: 1 year for ISO 17025 accredited laboratories; 2 years for field instruments in non-accredited applications
  • Field calibration check: use an IEC 60942 Class 1 sound calibrator (94 dB or 114 dB) before and after each measurement session
  • Loaner instruments available during calibration to minimize project downtime — contact Norsonic Asia for loaner availability

Availability & Regional Support

Available from Norsonic Asia — the factory-authorized distributor for ASEAN, GCC, and South Asia. Instrument supply includes 3-year manufacturer warranty, factory-authorized calibration services, operator training, and after-sales technical support.

  • Typical lead time: 3–6 weeks from order confirmation (ex-factory Norway)
  • Countries served: Singapore, Malaysia, Thailand, Vietnam, Philippines, Indonesia, UAE, Saudi Arabia, Qatar, Kuwait, India, Bangladesh, Sri Lanka, and more
  • Technical support: English and Arabic; response within 1 business day

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