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NetdB dBVision - Acoustic Holography

Track the noise with images

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Overview

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Main Functions

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Specifications

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Pictures

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PDF Brochure

NetdB dBVision Acoustic Holography pic1

OVERVIEW

dBVision: Track the noise with images!
Taking advantage of the unrivaled accuracy of Nearfield Acoustic Holography (NAH) for identifying noise weakness parts in your products.
This powerful software package is dedicated to acoustical imaging (pressure and intensity) based on the holography technique. dBVision enables to localize the sources with a spatial resolution that only holography can reach.

Sound intensity and partial power can be derived from the preliminary data analysis in order to establish a ranking of the noisy components, thus making dBVISION a powerful tool for the improvement of a large panel of products.

Needing the accuracy of acoustical holography for eradicating sound sources?

dBVISION provides you with the power of Nearfield Acoustical Holography (NAH) for:

bulletBest accuracy in noise Source localization
bulletMost operational process for capturing the real test situation (RELAX technology)
bulletUnique patented IPS technology for CABIN noise processing
bulletSource quantification through immediate radiated power evaluation (global & partial)

 

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Main functions


A wide range fitting general and specific customers requirements of solutions complying with dimension of the tested structure and application fields:

bulletdBVision (inside vehicle, cockpits)
bulletdBVision MARINE (signature of naval vessels and submarines)
bulletdBVision ENGINE (on running engine in test bench situations)
bulletdBVision COMPONENT (exterior measurement of test products and components)

With a combined approach (exterior/interior measurements), dBVision demonstrated the benefits of NAH and offers the most cost-effective solution recognized for industrial acoustical investigations pertaining to a wide range of structures and components, from design phase through tuning and modification stages of projects, up to final acoustic optimization.

Best system for diagnosis, comparison and optimization

bulletAccurate Source localization and quantification (ranking) on any tested equipment
bulletParametric simulation of new potential solutions relying on source masking functions
bullet2D/3D map visualization for an efficient dialog with design office and project management
bulletPerfect tool for benchmarking competing solutions and predicting acoustic final product score (synthesis)

Test productive and cost effective solution

bulletAll operational situations met with a choice of compact user-friendly hand-held arrays
bulletPatented IPS coupled to remotely driven DAQ system reduces time & facility (wind tunnel operations, ...) costs
bulletFully automated test procedures relying on robotized instrumentation for increasing added value time, dedicated to analyzing processed data and developing your most competitive solution


 

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SPECIFICATIONS

Software package

Data acquisition and database management

bulletNear-field pressure measurement, 3D visualization of measurement array locations
bulletSpectral analysis, holography mapping, noise source localization
bulletVisualization of pressure and intensity results (spectra, 2D colour maps),
bulletGlobal radiation power estimation
bulletUsual mathematical operators on NAH results (+,-,/, ...)
bulletExport to Matlab© (including time domain data)
bulletBatch functionality for data processing and reporting via automatic export to standard office tools

Software options

RANKING - Partial power computations and Source ranking according to selected zones (patch definition)

bulletTL: Transmission Loss computations possibly using selected zones definition (patch definition)
bulletFAR: Far-field predictions capabilities, radiations patterns (directivity, polar diagrams, ...) - standard or advanced modules
bulletEARPREDICT: CABIN Noise level predictions at arbitrary location inside an enclosure
bullet3DV: 3D results display - enhanced interpretation capability
bulletMULTIPLAN: Multiple plan NAH measurement processing & related results display - includes 3DV option
bulletHOLOCYL: Cylindrical NAH measurements, processing & related results display - includes 3DV option
bulletRELAX: Automatic projection of measurement data onto regular grids from arbitrary antenna locations

Hardware components

bulletAcoustic arrays:

Standard 6, 10 and 12 channel arrays of microphones, IEPE* type 5cm spacing
Modular array of microphones, IEPE* type, 10 to 60 channel 2.5cm spacing
Any further array dimensions upon customer's request (esp. for Navy applications)

bulletReference transducers (microphones, accelerometers, ...) used out of measurement plane
bulletdBVision patented Instrumentation Positioning System: Simple, non-contact geometry positioning device based on ultrasonic technology
bullet2D, 3D and 5D robots for automated testing

Data acquisition

Full compatibility with stand-alone hardware: NetdB-DAQ platforms of 01dB, compact ORCHESTRA, PXI or VXI front-ends.

Product requirements:

bulletRecommended PC computer: Minimum configuration with Pentium IV (2.4 GHz) or Centrino (1.6 GHz) with 512MB RAM, 40GB HDD
bulletXVGA display
bulletOS Win 2000 SP4 or Win XP SP1.

* IEPE: Integrated PiezoElectric Electronic

 

Download PDF Brochure

 

PICTURE

  NetdB dBVision Acoustic Holography pic2

 

NetdB dBVision Acoustic Holography pic3

 

 

 

 

 

 

 

 

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