µZ impedance tube
Introduction
µZ (pronounced: /'mju:zi:/) is a state-of-the-art impedance tube designed for precise acoustic testing of small material samples. The device gets it name from the symbols for micro (µ) and impedance (Z). It can be used to measure the acoustic properties of small material samples, like meshes, membranes, or vents, typically used in hearables. µZ operates effectively over a wide frequency range, depending on the specific type of device.
| System | Inner diameter | Frequency range |
|---|---|---|
| µZ-20 | 20 mm | 20 Hz - 8 kHz |
| µZ-30 | 30 mm | 20 Hz - 6 kHz |
Use cases
Although it is designed to measure acoustic properties of thin samples, µZ can also be used for regular impedance tube measurements. Combined with the ACME measurement and analysis software, the system can be used for:
- Acoustic material characterization: Characterization of the series impedance of thin materials such as meshes and membranes.
- Sound absorption measurements: Evaluation of the normal incidence sound absorption and reflection coefficient of an acoustic sample.
- Quality control: Monitoring acoustic products to ensure consistent quality.
warning
µZ is a sensitive piece of measurement equipment and its results are affected by changes in temperature. Make sure to use µZ in a well-controlled environment with consistent climate conditions.