Acoustic Duct (Impedance Tube)
A system that measures the degree of sound absorption and insulation by measuring properties of the sound absorption and sound insulation of acoustic materials in a wide frequency range.
AD9301 : Sound absorption coefficient and sound difference measurement system
AD9302 : Sound Absorption Coefficient Measurement System
AD9303 : Sound absorption coefficient (including road pavement) measuring system
AD9304 : Muffler Sound Insulation Measurement System
AD9305 : High-frequency sound absorption coefficient and sound difference measurement system
Analysis software
Real Time FFT
Signal Generation
Autospectrum. Cross-Spectrum Measurement
Calculation of Absorption Ratio
Calculation of Transmission Loss
Microphone Calibration
Database
Model
AD-9301 (For measurements of absorption ratio and transmission loss)
AD-9302 (For measurement of absorption ratio only)
Model
AD-9303 (For measurements of pavement absorption ratio)
Model
AD-9305 (For measurements of absorption ratio and transmission loss in high frequency)
AD-9301/9302
Frequency range Name of duct Dia(mm) Length(mm)
9301 9302
Measuring at low frequency range
(100Hz ~ 10000Hz)
Signal generating 1EA 100 645 645
Calibrating 1EA 100 481 215
Fixing absorption material 1EA 100 210 210
Measuring at high frequency range
(500Hz ~ 6400Hz)
Signal generating 1EA 29 352.5 352.5
Calibrating 1EA 29 276 215
Fixing absorption material 1EA 29 210 210
※ Test specimens, UADC(A/D Converter), Software and Microphones are fully provided.
AD-9303
Frequency range Name of duct Dia(mm) Length(mm)
Measuring at low frequency range
(100Hz ~ 1600Hz)
Signal generating 1EA 100 645
Calibrating 1EA 100 215
Fixing absorption material 1EA 100 210
※ In-situ test fixture 1 set, UADC(A/D Converter), Software and Microphones are fully provided.
AD-9305
Frequency range Name of duct Dia(mm) Length(mm)
Measuring at low frequency range
(100Hz ~ 1600Hz)
Signal generating 1EA 16 304.5
Calibrating 1EA 16 266
Fixing absorption material 1EA 16 205
※ Test specimens, UADC(A/D Converter), Software and Microphones are fully provided.
ITEM AD-9301 AD-9302 AD-9303 AD-9305
Absorption ratio O O O O
Transmission loss O X X O
Absorption ratio of pavement N/A N/A O N/A
Measurenm frequency range (Hz) 100 ~ 6400 100 ~ 6400 100 ~ 600 1000 ~ 10000