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Noise Monitoring

Nor1297 Noise Compass

Nor1297 Noise Compass: directional noise source identification array for environmental monitoring, complaint investigation, and source attribution.

Overview

The Nor1297 Noise Compass is an advanced outdoor noise monitoring accessory that adds directional source identification capability to Norsonic measurement instruments. Using an array of eight digital MEMS microphones with beamforming algorithms, the Noise Compass determines the direction of arrival of sound in real time with ±5° angular resolution across a full 360° horizontal coverage, enabling o…

Key Features

  • 360° horizontal coverage for complete sound field monitoring
  • Real-time direction of arrival calculation using beamforming
  • Angular resolution ±5° for accurate source attribution
  • IP65 weatherproof enclosure for permanent outdoor installation
  • Integration with Nor1545, Nor145, and Nor150 instruments
  • Combined level and direction data for intelligent NorCloud alerts
  • Wide operating temperature range -20°C to +55°C for extreme climates
  • Eight digital MEMS microphone array for reliable performance

Applications

  • Airport noise monitoring with aircraft movement source identification
  • Industrial facility perimeter monitoring for source attribution
  • Wind farm noise complaint investigation and source confirmation
  • Construction site noise monitoring with contractor identification
  • Road and rail traffic noise source separation and classification
  • Event venue and entertainment district noise enforcement

Technical Specifications

  • Model: Nor1297
  • Microphone Array: 8 digital MEMS microphones
  • Angular Resolution: ±5° typical
  • Horizontal Coverage: 360° full azimuth
  • Frequency Range: 100 Hz – 10 kHz
  • Source Identification: Real-time direction of arrival
  • Compatibility: Nor1545, Nor145, Nor150
  • Protection Rating: IP65 weatherproof
  • Power: Via host instrument or external DC
  • Operating Temperature: -20°C to +55°C
  • Weight: 1.2 kg
  • Mounting: Mast mount with integrated wind screen

Frequently Asked Questions

  • How does the Noise Compass identify noise sources?
    The Nor1297 uses an array of eight digital MEMS microphones with beamforming algorithms to determine the direction of incoming sound. Combined with time-synchronized level data, NorReview software can identify which sources contributed to measured noise levels at any point in time.
  • What software is required for analysis?
    NorReview (Nor1026) software is used to analyze Noise Compass data, providing visual displays of source directions and their time-varying contributions. The directional data can also be accessed through NorCloud for remote monitoring applications.
  • Can it be used with noise monitoring terminals?
    Yes, the Nor1297 integrates directly with the Nor1545 noise monitoring terminal, Nor145 sound level meter, and Nor150 analyser for combined level monitoring and source direction identification.

Application Guide

The Nor1297 Noise Compass belongs to the Norsonic Noise Monitoring range. See the Noise Monitoring 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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