Measurements of Environmental Noise

One of the greatest challenges with unattended noise monitoring is to ensure that the monitored site really is the source being measured. What is making the noise? Is it the construction site, a nearby railway or an aircraft?

Norsonic was the first company to introduce sound recording of noise events in a sound level meter. This greatly improved the work to identify a noise event and to judge whether it should be excluded or not from the overall noise level. However, it’s quite time consuming to listen through numerous sound recordings. The three dimensional Nor1297 Noise Compass significantly reduces time spent on judging if a noise source should be a part of the overall noise calculation or not, simply by defining which direction the noise is coming from.

When used together with Norsonic’s sound level meters and NorCloud, the device provides a three-dimensional vector pointing at the sound source. The system may also operate off-line and collect the data on the instruments SD card for later analyse in NorReview.

Applications:

• Construction site monitoring
• Harbour monitoring
• Airport monitoring
• Road/railway monitoring
• Plant monitoring

Using NorCloud’s sophisticated trigger capabilities, events may be marked with the source direction. Alarms may be selected for combinations of sound pressure levels and incident angles. Thus, sections of the measurement may be excluded (even automatic) when the source location is outside the region of interest.

Example: Provide an alarm to a user or groups of users when Leq is above 75 dB and sound is coming from the construction site.

Example: Exclude the parts of a measurement which is contaminated by railway noise from the LDEN calculation. NorCloud provides a map where regions of interest are easily defined. Visualization of sound incident is linked to the regular data presentation. The 3D capability of device will efficiently help to determine aircraft noise from above.

For complete specification and demo of the device, contact us via our contact form.

The Nor1545 noise monitoring terminal is a robust, efficient solution for your outdoor noise monitoring. Equipped with the state-of-the-art sound level meter Nor145 hosting latest generation communication technology, noise data can be reliably and securely transferred to your office.

The system can be a stand-alone Noise Monitoring terminal or managed and supervised by NorCloud.

With NorReview you may perform further in-depth analyses of your noise data combined with the Noise Compass and weather data.

Features:

• See and manage your noise data online using NorCloud.
• Listen to recorded events.
• Automatic reporting.
• Noise source location using the Norsonic Noise Compass.
• Support for weather data.
• Support for IP camera.
• Data stored local on SD card and in NorCloud for full redundancy.
• Wired (LAN) or wireless (WIFI/UMTS/LTE/3G/4G).
• Built in GPS.
• Get notified by email or SMS when set thresholds are reached!
• Event trigger for picture, audio and weather data.
• System alarms are generated with mains failure, battery low etc. Notification sent via e-mail.
• Support for external antennas with full diversity in places with bad signal strength.
• Interrupt free switching between mains, external 12V, Solar panel and internal 12V battery.

For complete specification and demo of the device, contact us via our contact form.

The Nor1531 noise monitoring terminal is a robust, cost efficient solution for your outdoor noise monitoring. Equipped with the technology from the state of the art sound level meter Nor150 and latest generation communication modules, noise data can be reliably and securely transferred to your office.

Nor1531 can be a stand-alone Noise Monitoring terminal, managed and supervised with the NorRemote webserver built in the NMT.

Nor1531 can be a part of a large-scale monitoring project, containing several NMTs and other sensors. All handled by the new fully web-based NorCloud system. Here you can see and download data from all sensors, listen to trigged audio recordings and design and automatically generate your own reports.

For further analyse of your data, you can download your measurements and use the NorReview software to analyse them.

The communication with the Nor1531 terminal is IP based. As long as you connect it to Internet by LAN/WIFI/3G you can reach it from anywhere! For extended security its possible to establish an encrypted VPN tunnel over internet.

Features

• See and manage your noise data online using the internal NorRemote web interface
• Listen to recorded events.
• Wired (LAN) ore wireless (WIFI/UMTS/LTE)
• Get notified by email or SMS when set thresholds are reached!
• Connect NMT to the new NorCloud web based monitoring platform

For complete specification and demo of the device, contact us via our contact form.

Noise monitoring, permanent or short term, has never been easier. Just connect your noise monitoring terminal 1545 or your stand-alone Nor145/150 to your NorCloud project, and the system will start to measure. Data is automatically uploaded to NorCloud. Create your report using the report designer or get help from your  local Norsonic distributor. Automatically remove unwanted noise from your project using the noise compass – spend less time on listening to audio events.

Scalable and easy
When creating an account in NorCloud you can create and manage as many projects you want. You can connect as many noise-monitors you like, there is no limitation. You pay per unit in use per day – no hidden costs.

System Alarms
System Alarms helps you to monitor the health status of your projects. Alarms are generated in case of lost connection, mains failure, low battery, data transfer failure, microphone calibration failure and more.

Noise event handling
You can configure noise event alarms based on different measurement parameters, dose calculations etc. You may trigger actions like sending emails, audio recording, pictures or just set a digital output.

Measurement parameters
NorCloud supports all measurement parameters measured by the Nor145/150. From just LAeq every minute or less, to high resolution 1/3 octave multispectrum. You may just send some parameters to NorCloud and decide to store the rest on the local SD card for later data processing and cost saving.

Permanent audio recording
The system can do permanent audio recording 24/7 with data stored locally on the noise monitor. Listen to the data and select what data to upload. A data management system automatically erases the oldest data.

LDEN
The system automatically calculates and report LDEN. Penalty for impulsive noise is automatically detected in accordance with ISO1996-3.

Dose calculation
This is a tool for seeing if an equivalent sound level is in danger of reaching or reaches a certain sound level limit within a certain time span. It supports an alarm message on email when reaching the first limit (yellow alarm) and the second limit (red alarm). The dose calculation is based on an A-weighted Sound Exposure Level, LAE.

Live data
Live data can be switched on to generate real time noise data to govern noise from live events, such as racetracks or shooting ranges.

Noise compass
The noise compass (optional) calculate the noise emission from your predefined 3D sectors. This helps you to automatically remove unwanted noise events from other sectors than the project you manage.

Reporting
Use the report generator or Excel to make your own customized reports. Reports can be generated at fixed intervals (day, workdays, week, month, year) or on demand.

Push data to a local server
NorCloud offer automatically data transfer to your server. Most data formats are supported.

For complete specification and demo of the software, contact us via our contact form.

Norsonic offers a broad range of microphone solutions for permanent and semi-permanent installations. All microphones fulfil directional characteristics for both 0- and 90-degree sound incidence when used with a Norsonic sound level meter.

Nor1216 for permanent installations

• Outdoor microphone for community and aircraft noise.
• Fulfils IEC 60651, IEC 61672 class 1 and ANSI S1.4 type 1 (frequency correction applied).
• Protection class IP 55 (dust and water).
• Easy to calibrate with a normal ½” sound calibrator.
• Microphone verification by SysCheck facility
• Low self noise – typically below 17 dB, A-weighted.
• Delivered with individually calibration certification.
• Built-in heating for enhanced weather protection.
• Directly powered and supported by Nor140 or Nor150 (built-in selectable frequency correction networks, heater supply and SysCheck signal generator).
• Type approved by PTB, Germany.

Nor1217 for temporary installations

• Outdoor microphone for community and aircraft noise.
• Directly powered and supported by Nor140 or Nor150 (built-in selectable frequency correction networks, SysCheck signal generator).
• Fulfils IEC 60651, IEC 61672 class 1 and ANSI S1.4 type 1 (frequency correction applied).
• Protection class IP 55 (dust and water).
• Easy to calibrate with a normal ½” sound calibrator.
• Microphone verification by SysCheck facility.
• Low self noise – typically below 17 dB, A-weighted.
• Low cost – uses microphone and preamplifier supplied with Nor140.
• Type approved by PTB, Germany.

Nor1218 for temporary installations

• Outdoor microphone for community and aircraft noise.
• Directly powered and supported by Nor131/ Nor139 (built-in selectable frequency correction networks).
• Fulfils IEC 60651, IEC 61672 class 1 and ANSI S1.4 type 1 (frequency correction applied.
• Protection class IP 55 (dust and water).
• Easy to calibrate with a normal ½” sound calibrator.
• Low self noise – typically below 17 dB, A-weighted.
• Low cost – uses microphone and preamplifier supplied with Nor131/Nor139.

For complete specification and demo of the devices, contact us via our contact form.