Application of bass traps for improving sound fields characteristics with heavy-weight floor impact noise

Contents

1. Introduction

2. Materials and methods

2.1. Bass trap profiles

2.2. Sound absorption measurement

2.3. Floor impact noise measurement

2.4. Reverberation time measurement

2.5. Box-type test building with slab thickness of 120 mm

2.6. Experimental configurations

3. Results

3.1. Sound absorption properties of bass trap samples in the reverberation chamber

3.2. Sound fields characteristics with bass traps in the box-type building

3.2.1. Distribution of heavy-weight floor impact noise

3.2.2. Distribution of reverberation time

4. Discussion

4.1. Reduction of heavy-weight floor impact noise in terms of single number rating

4.2. Comparison of equivalent sound absorption area of bass traps between reverberation chamber and the box-type building

4.3. Bass trap location for improving sound fields in the box-type building

5. Conclusions

References