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Model 9302
Nomal incidence Sound absorption raito measurement system
Model 9301
Normal incidence Sound absorption ratio / Sound transmission loss measurement system
This normal incidence acoustic measurement system captures reflected sound or transmitted sound produced by a source sound hitting a sound absorption material or sound insulation material normally. This is used to measure the sound absorption ratio, acoustic impedance, and related values, as well as the sound during development or review of a material. The system measuring the sound absorption ratio is suitable for measurement of small-size test specimen with a diameter of up to 100mm (108 mm when measuring the sound transmission loss). sound insulation materials for automobiles or buildings, being able to quickly evaluate new materials or laminated materials is a crucial requirement during the development stage. The current system makes it easy to perform such evaluations by determining the physical characteristics of the material.
Normal incidence acoustic measurement system
Model:
9301_9302
Maker:
RION CO.,LTD.
Model 9302 Normal incidence sound absorption ratio measurement system
Determines sound absorption ratio and acoustic impedance related values
of sound absorption material (compliant with JIS A 1405-2 and ISO 10534-2)
Model 9301 Normal incidence sound absorption ratio / Sound transmission loss measurement system
Measures sound absorption ratio and acoustic impedance related values of sound absorption material and normal incidence sound transmission loss of sound insulation material
Tube Model 9302 Sound absorption ratio measurement System
Standard compliance JIS A 1405-2, ISO 10534-2:1998
Tube name | Dia. (mm) | Length (mm) | |
Low frequency measurement range 1/3 oct (125 Hz to 1600 Hz) |
Main section | 100 | 645 (620)* |
Calibration section | 100 | 215 | |
Measurement section | 100 | 210 to 313 | |
High frequency measurement range 1/3 oct (500 Hz to 6300 Hz) |
Main section | 29 | 345 (320)* |
Calibration section | 29 | 215 | |
Measurement section | 29 | 210 to 313 |
*Linked length
Result display (Model 9302)
Sound absorption ratio | 1/3 octave band analysis, FFT analysis display |
Acoustic impedance Z | Absolute value, Phase, Real part, Imaginary part |
Reflection coefficient | Absolute value, Phase, Real part, Imaginary part |
Surface impedance Z1 | Absolute value, Phase, Real part, Imaginary part |
Characteristic impedance Zc | Absolute value, Phase, Real part, Imaginary part |
Propagation constant r | Attenuation constant α, Phase constant β |
CSV format file output | Density p, Sound velocity c, Z1, Zc , r |
Tube Model 9301* Sound absorption ratio / Sound transmission loss measurement system
*Includes the functions of the normal incidence sound absorption ratio measurement system (Model 9302)
Tube name | Dia. (mm) | Length (mm) | |
Low frequency measurement range | Main section | 100 | 645 (620)* |
Link section | 100 (108) | 96 to 116 | |
Calibration / Measurement section | 100 | 400 (390)* | |
Sound absorption ratio measurement section |
100 | 210 | |
High frequency measurement range | Main section | 29 | 345 (325)* |
Link section | 29 (36) | 116 to 156 | |
Calibration / Measurement section | 29 | 169 (159)* | |
Sound absorption ratio measurement section |
29 | 210 to 313 |
*Linked length
Result display (Model 9301)
Sound absorption ratio | 1/3 octave band analysis, FFT analysis display |
Acoustic impedance Z | Absolute value, Phase, Real part, Imaginary part |
Reflection coefficient | Absolute value, Phase, Real part, Imaginary part |
Surface impedance Z1 | Absolute value, Phase, Real part, Imaginary part |
Characteristic impedance Zc | Absolute value, Phase, Real part, Imaginary part |
Propagation constant r | Attenuation constant α, Phase constant β |
CSV format file output | Density p, Sound velocity c, Z1, Zc, r |
Sound transmission loss | 1/3 octave band analysis, FFT analysis display |