Comprehensive characterization of room acoustics requires high-resolution spatial analysis using higher-order microphone array measurements. With the application of a recently proposed room acoustic analyzer based on Eigenbeam spatial correlation method and von Mises–Fisher (vMF) mixture modeling, it was found that first-order ambisonics estimated from a 32-channel spherical microphone array measurement can fairly estimate crucial room acoustic factors related to room modes, early reflections and dominant reflection directions. In this paper, we will evaluate the viability of this analyzer using first-order microphone array measurements. The study is conducted using B-format room impulse response dataset of a classroom for different receiver positions. The estimated reflection power spectrum and anisotropic reflection features complied with existing insights from the higher-order analysis. By applying an Eigenbeam-vMF-based analyzer, first-order microphone arrays can be efficiently utilized in room acoustic applications to identify coloration frequencies and early reflection sources.
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can
subscribe to this RSS feed.
Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.
