Data Acquisition and Processing

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Data Acquisition and Processing

• MIRA NVH

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Data Acquisition

• LMS Test.Lab based data acquisition
• 5 in-vehicle systems
• Total of 120 channels available
• Specialized instrumentation
• High temperature
• High sensitivity

• Binaural HEAD SQ Software
• Accurate reproduction of measured sound

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In-vehicle Instrumentation
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In-vehicle Instrumentation
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Instrumentation On-line Data Processing
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Vehicle Suspension Vibration Sensor Location
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Vehicle Body Vibration Sensor Location
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Engine Mount Vibration Sensor Location
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HVAC Vibration Sensor Location
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Local Inertance Tap Test
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Sound Quality
Binaural HEAD SQ Software
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Data Processing

• Signature Analysis
• Broad band/narrow band frequency analysis
• Structural Analysis
• NTF/VTF
• Modal
• Advanced Techniques
• Road Modals
• Intensity Measurements
• Transfer Path Analysis

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3rd Gear WOT Interior NoiseColour Map
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3rd Gear WOT Interior NoiseOverall and Order
Levels
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Engine Cold Start/Stop Engine Block Vibration
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Engine Cooling Fan Noise Interior Noise1/3
Octave Spectrum
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Local Inertance Tap Test
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Sound Intensity Map
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Transfer Path Analysis- TPA

• Transfer Path Analysis is a technique for
  quantifying the contributions of individual paths
  to the interior noise or occupant contact point
  vibration.

• MIRA has developed its own TPA software for use
  in a variety of NVH activities, mainly Problem
  Solving.