Estimation of the direct-to-reverberant Energy Ratio using a spherical microphone array

2015/10/30 by Hanchi Chen, Prasanga N. Samarasinghe, Chen, Hanchi +5
Computer Science · #FOS: Computer and information sciences #Sound (cs.SD) #cs.SD

paper · pdf · doi:10.48550/arxiv.1510.08950

In Proceedings of the ACE Challenge Workshop - a satellite event of IEEE-WASPAA 2015 (arXiv:1510.00383)

arxiv created 2015/10/30 · arxiv updated 2015/11/02

Abstract

This paper proposes a practical approach to estimate the direct-to-reverberant energy ratio (DRR) using a spherical microphone array without having knowledge of the source signal. We base our estimation on a theoretical relationship between the DRR and the coherence estimation function between coincident pressure and particle velocity. We discuss the proposed method's ability to estimate the DRR in a wide variety of room sizes, reverberation times and source receiver distances with appropriate examples. Test results show that the method can estimate the room DRR for frequencies between 199 - 2511 Hz, with ± 3 dB accuracy.

Citations

• Proceedings of the ACE Challenge Workshop - a satellite event of IEEE-WASPAA (2015)

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