:AutoSpectrum of the Incident Wave

1
Measurement of Absorption Ratio using Two
Microphone Method
Auto-Spectrum of the Incident Wave
Auto-Spectrum of the Reflected Wave
2
Diagram of Absorption Ratio Measurement Apparatus
Integrated in SCIEN System
3
Measurement of Transmission Loss using Four
Microphone Method
Auto-Spectrum of the Incident Wave
Auto-Spectrum of the Reflected Wave
4
Diagram of Transmission Loss Measurement Apparatus
Integrated in SCIEN System
5
Acoustic Duct for Absorption Ratio Measurement
Duct for Low Frequency
Duct for High Frequency
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Acoustic Duct for Transmission Loss Measurement
Duct for Low Frequency
Duct for High Frequency
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Between Acoustic Duct and Impedance Tube
Acoustic Duct (SCIEN)
Impedance Tube (BK)
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Between Acoustic Duct and Impedance Tube
Acoustic Duct (SCIEN)
Impedance Tube (BK)
9
Between Acoustic Duct and Reverberant Room Method
Reverberant Room Method
Acoustic Duct
10
Measurement System of Acoustic Ratio and
Transmission Loss
using Personal Computer
11
Development of Measuring Device of Acoustic
Characteristic for Sound Absorber
and Sound Barrier
By SCIEN