Impedance Tube Buying Guide | Sound Absorption Measurement

Impedance tubes (Kundt's tubes) measure the normal incidence sound absorption coefficient and transmission loss of acoustic materials. This guide explains how to select the right system for your laboratory.

• 2-tube vs 3-tube configurations and their tradeoffs
• Tube diameter determines the upper frequency limit
• ISO 10534-2 and ASTM E1050-12 compliance requirements
• Microphone requirements for accurate transfer function measurement
• Software for absorption coefficient and transmission loss calculation