Impedance Tube System | Sound Absorption and Transmission Loss Measurement

The PLACID impedance tube system measures normal incidence sound absorption coefficient and transmission loss of acoustic materials using the transfer function method per ISO 10534-2 and ASTM E1050-12. Available in small-tube (29 mm, up to 6.3 kHz) and large-tube (100 mm, up to 1.6 kHz) configurations.

• Two-microphone transfer function method — ISO 10534-2 and ASTM E1050-12
• Small tube (29 mm): 500 Hz to 6.3 kHz
• Large tube (100 mm): 50 Hz to 1.6 kHz
• 3-tube configuration available for transmission loss measurement
• Includes speaker, driver, sample holder, and measurement software