Zircon V2 - EN 1793 In Situ Noise Barrier Measurement System
The Zircon V2 is a complete measurement system for road traffic noise reducing devices in accordance with EN 1793-3:1997, EN 1793-5:2016 and EN 1793-6:2018. Compared to earlier versions (supported by the original Zircon system), these updated standards have been improved by implementing a microphone grid.
The Zircon V2 comprises a loudspeaker unit (source), a 3x3-microphone array (measurement grid), a control interface, PC software DIRAC 7 or higher and optionally a power bank for off-grid operation.
Features
- Complete system for EN 1793 compliant in situ measurements
- Easy setup with few cables
- Loudspeaker unit and 3x3-microphone array fitted with standard screw threads
- Compact CI24 Control Interface contains multi-channel sound device and power amplifier
- Included tripods suitable for difficult terrain
- Includes protective flight-cases for Microphone array and Control Interface transport
- DIRAC software running on a PC (not included) performs impulse response measurements, provides all data to adjust the setup (INR, Rsub, time delays and Cgain), applies Adrienne temporal windowing, using the signal subtraction technique [5] to extend the frequency range and calculates the noise barrier parameters (RI, DLRI, SI, DLSI).
- Included spreadsheets calculate the final noise barrier parameters, taking into account the geometrical divergence of the sound Cgeo, LS24 sound source directivity Cdir, the acoustic channel gain changes Cgain and the normalized traffic noise spectrum as defined in EN 1793-3.
Application Information
DIRAC (version 7) generates sound via the CA24 interface through the LS24 loudspeaker,
which is emitted towards the noise reducing device NRD. The reflected or transmitted sound
is picked up by the MA24 microphone array and recorded by DIRAC via the CI24 interface.
From the NRD measurements and the corresponding free-field measurements (away from the NRD),
the intrinsic acoustic characteristics of the NRD are determined.
Instructions on the use of DIRAC 7 and the Zircon V2 system for EN 1793-5 reflection measurements measurements,
as well as auxiliary files can be downloaded in a single ZIP file containing the following items:
- EN 1793-5 AE Measurement Procedure 1.0
- EN 1793-5 solution spreadsheet
- ProjectReflection Dirac script
Instructions on the use of DIRAC 7 and the Zircon V2 system for EN 1793-6 transmission measurements measurements,
as well as auxiliary files can be downloaded in a single ZIP file containing the following items:
- EN 1793-6 AE Measurement Procedure 1.0
- EN 1793-6 solution spreadsheet
- ProjectTransmission Dirac script
Zircon V2 Components and ordering information
| Description | Order code | |
|---|---|---|
  |
Standard:
Optional: |
LS24
CA12 |
  |
Standard:
Optional:
Spare AEM-01 microphone |
MA24
CA24 AEM-01 |
 |
Standard: Optional:
|
CI24
|
Each product or component can be ordered separately. For pricing and other ordering information, please contact us.