Acoustic Impedance Tube
The Acoustic Impedance Tube is a fundamental device for measuring the acoustic parameters of materials. Under conditions that satisfy the guided wave fundamental frequency transmission, sound waves within the tube propagate in the form of plane waves. In the direction of wave propagation, the phase is uniform throughout. Therefore, the acoustic signals recorded by the microphones on the tube wall correspond to the sound wave signals propagating within the tube.
By using the sound pressure transfer function between microphones at multiple positions and intervals, it is possible to separate the incident and reflected waves within the tube. Through appropriate physical relationships, the corresponding acoustic parameters of the material can be determined.
The T3000 Series Impedance Tube launched by Suzhou Dongyuan is specifically designed for testing the sound absorption coefficient of materials. It utilizes the transfer function method and dual-microphone testing technology, ensuring both speed and accuracy in testing.
T3000-L
T3000-H
SOFTWARE FEATURES
User-friendly Operation
The material tube features a quick-release design, simplifying the testing process and improving operational efficiency.
Precise Measurement
The main body is equipped with three microphone openings, arranged in a near-far layout, to accommodate testing across different frequencies.
Flexibility
Offers impedance tube options with different diameters, expanding the testing frequency range to meet diverse testing needs.
Stability and Reliability
The structural design is robust, with specialized leak-proof interfaces to ensure the stability of the testing process.
Standards Compliance
Complies with international standards such as GB/T 18696.2-2002, ISO 10534-2, and ASTM E1050, ensuring the authority of the test results.
Innovative Design
Based on the transfer function method, a dual-microphone technique is used to simultaneously measure the full-frequency normal absorption coefficient and acoustic impedance of materials, significantly improving testing efficiency.
The T5000 series impedance tubes from Suzhou Dongyuan are focused on testing the material transmission loss coefficient. Using a four-microphone method, they enable comprehensive measurement of acoustic parameters.
T5000-L
T5000-H
SOFTWARE FEATURES
Easy to Operate
The quick-release design of the material tube simplifies the testing process, enhancing ease of use.
Porous Layout
The main body features six microphone openings, with three in the front half and three in the rear half, arranged in a near-far layout to meet the testing needs across different frequencies.
Expandability
Impedance tubes with different diameters are available to accommodate a wider range of testing frequencies, enhancing testing flexibility.
Robust Structure
The design is structurally stable, with specially designed interfaces to prevent leakage, ensuring the accuracy and repeatability of the testing process.
Standards Compliance
Complies with standards such as GB/Z 27764-2011 and ASTM E2611-09, ensuring the accuracy and reliability of test results.
Comprehensive Testing
Based on the transfer function method and four-microphone technique, all acoustic parameters across frequencies are measured in one go, including transmission loss, transmission coefficient, reflection coefficient, absorption coefficient, wave number, and characteristic impedance.
Product Specifications
ISO Standard Impedance Tube
Full-frequency Membrane Impedance Tube
Ultra-high-frequency Membrane Impedance Tube
SOFTWARE FEATURES
Material Air Permeability
Material Normal Impedance
Acoustic Impedance of Thin-layer Materials
Material Absorption Coefficient
Material Flow Resistance
Acoustic Impedance of Acoustic Die-cut Components
Material Transmission Parameters, Transmission Matrix
Material Reflection CoefficientMaterial Reflection Coefficient
Acoustic Impedance of Acoustic Mesh Fabric, Acoustic Impedance of Waterproof Breathable MembraneMaterial Flow Resistance
Application Scenarios：The client base is primarily distributed across industries such as automotive manufacturing, home appliance manufacturing, medical manufacturing, and other industrial equipment manufacturing.
Product Specifications
Full-frequency Membrane Impedance Tube
Product Specifications
Ultra-high-frequency Membrane Impedance Tube
