{'fraction_non_alphanumeric': 0.01486988847583643, 'fraction_numerical': 0.0, 'mean_word_length': 5.622950819672131, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Investigation on Optimal Microphone Arrangement of Spherical Microphone Array to Achieve Shape Beamforming

This paper presents a spherical microphone array design which can be used for capturing a sound selectivity and locally. Capturing a sound by microphone array is achieved by method of Delay and Sum Beam Forming (DSBF). In this method, microphone arrangement has a large effect on the directivity. Using beam forming simulation, the authors investigated on the optimal arrangement of concentrically spherical microphone array which improves the basic performance of beam forming. As a result, we obtained a high directional quality arrangement consisted of truncated icosahedron and regular icosahedron. By comparing the uniformity scattered method, we confirmed the effectiveness of proposed method.