Noise monitoring terminal

CUBE is the noise monitoring terminal from Acoem, at the cutting edge of innovation. Designed to meet the needs of all kinds of application, CUBE can be adapted to suit every situation: portable in a carrying case, stationary in a fixed unit, and compatible with 01dB WebMonitoring services.


Acoem ecosystem

The Acoem ecosystem is all about synergy between the products in its new range. ORION, FUSION, DUO, CUBE: 4 units, 4 fields of application but one single ecosystem focused on improving your productivity. To this end, they all operate in the same way with respect to the integrated keyboard and Web interface. They use identical data processing software. And they all share the same accessories.
These complementary and innovation-packed systems offer harmonized and intuitive interfaces so as to ensure major time-savings for users.

Guaranteed metrology

The CUBE system is certified IEC 61672 class 1 and is approved in numerous countries. During acoustic monitoring, there may be multiple noise sources to be measured, located in varying positions relative to the measurement point (e.g. land transport, aircraft, industrial noise and worksites). CUBE can be used to take measurements in two reference directions: 0° or 90°.

Calibration and verification

To simplify the installation of CUBE on the site, a function for the automatic detection of a calibration acoustic source allows the performance of a calibration and adjustments without the user needing to do anything more than switch the device on. Furthermore, to ensure proper operation, an integrated measurement-chain verification system performs periodic checks. Electrical verification allows the testing of the entire measurement chain, including the microphone. It consists of injecting an alternating sinusoidal load on the microphone’s terminals at the selected frequencies at one or two levels. The principle is to read reference values and check the deviation with respect to other measured values over time.

Sophisticated events module

CUBE incorporates the most sophisticated event-detection filter system, from the simplest to the most complex configuration. At a basic level, the user can define an event, comprising a trigger that can be programmed over a maximum of 24 time periods. All parameters (overall level, spectral level, sliding Leq, meteorological parameters, etc.) instantaneously stored at the logging interval can be used to define the trigger. With the advanced module, up to five events can be programmed, each comprising a combination of logic statements (“AND” or “OR”) for several triggers (maximum of five).

24h connectivity

CUBE offers excellent connectivity, with a built-in 3G modem, WiFi 802.11 b/g/n, Ethernet and ADSL connections. It monitors around the clock, responds to your requests and keeps you informed of situations encountered:

  • acoustic and meteorological measurements
  • structured storage of information
  • automatic transmission of data to one or two remote servers
  • changes to parameter configuration via a Web interface from your computer or smartphone
  • real-time listening to the measured noise
  • real-time display of data
  • text message sent upon low internal battery
  • communication of alarms to 01dB WebMonitoring services

Acoustic indicators

CUBE includes all the indicators expected by acoustic engineers: Leq, Lp, 1/1 or 1/3 octave spectrum, Fast Slow… These indicators may be measured and stored on the basis of an integration period (IP) of 20 ms (min.) to 3600 s (max.) in 5 ms steps.

In addition, 01dB also offers:

  • perceived aircraft noise level: PNL and PNLT
  • equivalent sliding noise level
  • sliding statistical level
  • noise exposure level.

The latter 3 indicators are mainly used for the monitoring of construction sites for the detection of noisy phases.

Weather interface

CUBE offers the ability to interface with the VAISALA WXT536 (six sensors) and WXT532 (two sensors) stations. 01dB chose these two stations as neither features moving parts. This avoids any risk of mechanical malfunction as a result of freezing temperatures or wear. The weather station and CUBE share a power supply with a 10 m cable connecting the two units, thereby offering excellent flexibility when installing the system. Meteorological data is stored on the CUBE system and transmitted in the same way as acoustic data (WiFi, 3G modem, USB cable, etc.). The logging interval for meteorological data is a multiple of the acoustic logging interval. Using the remote interface, the user can view the wind speed and direction (and possibly additional weather data) in real time.

DMK01 external unit

The installation of a CUBE sometimes requires the use of an external microphone line. To respond to this need, 01dB offers the new DMK01 unit, that comprises:

  • stainless-steel body
  • specific preamplifier allowing the re-use of the microphone and spike supplied with CUBE
  • specific anti-wind ball
  • a dummy microphone to protect CUBE when the microphone is removed.

The unit connects to CUBE’s preamplifier input via a cable of 3 to 50 metres in length. The periodic electrical verification function remains available.