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Measurement Microphones
Measurement Microphones
Precision Microphones for Acoustic & NVH Testing
Measurement microphones are essential for precise noise and vibration testing in automotive, EV, industrial, and laboratory applications. We supply a wide range of microphones provide high sensitivity, wide frequency response, and robust design for accurate NVH measurements.
Available in 1/4″, 1/2″, and 1″ configurations to suit a wide range of testing applications.
Product Categories
Product Categories
Free-Field Microphones
Free-Field Microphones
Free-field microphones are optimized for measurements in open or semi-anechoic environments where sound waves arrive directly without reflections.
Key Characteristics:
✅ Flat frequency response for direct sound incidence
✅ Wide bandwidth up to high-frequency ranges
✅ High sensitivity options available
Typical Applications:
✅ Automotive NVH testing
✅ Pass-by noise measurement
✅ Environmental and outdoor testing
Pressure-Field Microphones
Pressure-Field Microphones
Pressure-field microphones are designed for enclosed environments where sound pressure is uniform, such as cavities or couplers.
Key Characteristics:
✅ Accurate low-frequency response
✅ Stable measurements in confined spaces
✅ Wide dynamic range
Typical Applications:
✅ Electroacoustic testing
✅ Component-level noise analysis
✅ Calibration setups
Microphone Cartridges & Preamplifiers
Microphone Cartridges & Preamplifiers
Microphone cartridges and preamplifiers provide flexible solutions for building and integrating high-precision acoustic measurement systems.
Key Characteristics:
✅ Available in 1", 1/2", and 1/4" sizes
✅ Pre-polarized (IEPE) and externally polarized options
✅ Multiple connector types (Microdot, BNC, SMB)
Typical Applications:
✅ Custom acoustic measurement setups
✅ Laboratory and R&D testing
✅ System integration and upgrades
Acoustic Calibrators
Acoustic Calibrators
Acoustic calibrators are used to verify and calibrate microphones, ensuring accurate and reliable measurement results.
Key Characteristics:
✅ Stable and precise sound pressure output
✅ Portable and easy to use
✅ Suitable for field and laboratory calibration
Typical Applications:
✅ Microphone calibration and verification
✅ Quality assurance and compliance testing
✅ Routine system checks before measurements
Key Features
Key Features
✅ Wide frequency range: from low-frequency analysis to ultrasonic measurements
✅ Multiple sensitivities for different testing conditions
✅ High measurement accuracy and long-term stability
✅ Robust design for laboratory and industrial use
✅ Compatible with standard preamplifiers and data acquisition systems
Available Configurations
Available Configurations
✅ 1/4″ Microphones – High-frequency and precision measurements
✅ 1/2″ Microphones – General-purpose testing and NVH applications
✅ 1″ Microphones – Low-frequency and high-sensitivity measurements
Applications
Applications
✅ Automotive NVH Testing
✅ Acoustic Research & Development
✅ Environmental Noise Monitoring
✅ Product Noise Evaluation
✅ Electroacoustic Testing
Integration & Compatibility
Integration & Compatibility
These microphones are designed to integrate seamlessly with:
✅ Preamplifiers
✅ Data Acquisition Systems
✅ Acoustic Calibration Equipment
✅ Complete NVH Test Setups
Our team can support end-to-end system configuration based on your testing requirements.
📞 Contact Gravence Voltgrid
📞 Contact Gravence Voltgrid
Need help selecting the right measurement microphone?
Our engineers will help you choose the right configuration based on your application, frequency range, and testing environment.
📱Phone: +91 7676960981
📧Email: info@gravencevoltgrid.com
Q3: What microphone size is best for acoustic measurement ?
Q3: What microphone size is best for acoustic measurement ?
Measurement microphones are available in different sizes:
1 inch microphones → Best for low noise and low-frequency measurements
1/2 inch microphones → General-purpose acoustic testing
1/4 inch microphones → High-frequency and high-SPL measurements
Q4: Why is microphone calibration important in acoustic testing ?
Q4: Why is microphone calibration important in acoustic testing ?
Calibration ensures that the measurement microphone provides accurate and traceable sound pressure readings, which is essential for quality assurance, compliance testing, and reliable data analysis.
Q5: What is the difference between pre-polarized and externally polarized microphones?
Q5: What is the difference between pre-polarized and externally polarized microphones?
Pre-polarized (IEPE) microphones have built-in electronics and are easy to use with standard measurement systems.
Externally polarized microphones require an external power supply but offer higher accuracy and stability for precision laboratory applications.
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