Informative acoustic feature selection on microphone array wiener filtering for collecting target source on sports ground

We propose a Wiener filter design method for collecting target sources on a noisy sports field. Because the noise on a sports field, e.g., cheering from the audience, arrives from the same direction as that of the targeted source, it is difficult to accurately design a Wiener filter by simply using spatial cues. This study focused on a combination of spatial cues and acoustic feature modeling. The Wiener filter using our method was designed using a Gaussian-mixture-model-based mapping function with automatically selected informative acoustic features from pre-enhanced observation using spatial cues. Through experiments using two-directional microphones on a mock sports field, it was confirmed that the proposed method outperformed previous methods that used either spatial cues or acoustic feature modeling only.