{'fraction_non_alphanumeric': 0.02247191011235955, 'fraction_numerical': 0.009987515605493134, 'mean_word_length': 4.76978417266187, '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}}
A Study on Effect of IP Performance Degradation on Horizontal Sound Localization in a VoIP Phone Service with 3D Sound Effects

This paper studies a VoIP phone service with 3D sound effects (3D effect phone), which gives users more feeling of being at a live communication than legacy phone services. However, since an IP network is a best-effort one, we must consider effect of IP performance degradation on the 3D effect phone service. This paper evaluates effect of a speech coding IP packet loss on horizontal sound localization by experiment. The experimental results show the following three issues. First, a 3D effect phone service is feasible. Second, ITU-T G. 711 encoding is more suitable to the service than Speex encoding. Third, IP packet losses deteriorate horizontal sound localization.