A Sparsity Measure For Echo Density Growth In General Environments

We study the detailed temporal evolution of echo density in impulse responses for applications in acoustic analysis and rendering on general environments. For this purpose, we propose a smooth sorted density measure that yields an intuitive trend of echo density growth with time. This is fitted with a general power-law model motivated from theoretical considerations. We validate the framework against theory on simple room geometries and present experiments on measured and numerically simulated impulse responses in complex scenes. Our results show that the growth power of echo density is a promising statistical parameter that shows noticeable, consistent differences between indoor and outdoor responses, meriting further study.


Published in:
2019 Ieee International Conference On Acoustics, Speech And Signal Processing (Icassp), 226-230
Presented at:
44th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Brighton, ENGLAND, May 12-17, 2019
Year:
Jan 01 2019
Publisher:
New York, IEEE
ISSN:
1520-6149
ISBN:
978-1-4799-8131-1
Keywords:
Laboratories:




 Record created 2019-09-26, last modified 2020-04-20


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