Kundt tube - impedance tube
Material Sound Transmission Loss and Acoustic Impedance Tube Systems
Nor1527 acoustic performance measurement system is an acoustic impedance, sound transmission loss and sound absorption coefficient measurement system operating in accordance with ASTM E-2611, ASTM E-1050, ISO 10534-2 standards. Measurements can be made at a frequency of 50Hz – 6400 Hz, under room conditions, temperature and pressure. There are 2 different diameter tubes (100 mm, 30 mm diameter) for low and high frequency measurements.
The Nor1527 comes as a complete measurement set, including phase matched microphones, analyzer and the Norsonic Sound Tube measurement and analysis software.
Standards:
- ASTM E2611-19: Standard Test Method for Normal Incidence Determination of Porous Material Acoustical Properties Based on the Transfer Matrix Method
- ASTM E1050-19: Standard Test Method for Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones and a Digital Frequency Analysis System
- ISO 10534-2:2023: Acoustics — Determination of acoustic properties in impedance tubes - Part 2: Two-microphone technique for normal sound absorption coefficient and normal surface impedance
- ISO 717-1:2021: Acoustics - Rating of sound insulation in buildings and of building elements - Part 1: Airborne sound insulation
- ISO 11654:1997: Acoustics — Sound absorbers for use in buildings — Rating of sound absorption
