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arXiv 1606.07598cs.SD
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用于听觉流分离的主动机器听觉系统

An Active Machine Hearing System for Auditory Stream Segregation

Christopher Schymura, Thomas Walther, Dorothea Kolossa

摘要:

本研究描述了一种双耳机器听力系统,该系统能够在存在多个声源的情况下执行听觉流分离。流分离的过程是指人类听众将声学信号分组为对应于各个声源的不同听觉流的集合的能力。建议的计算框架模拟这种能力,通过概率聚类方案联合本地化和隔离。该方案基于冯米塞斯分布的混合物来模拟收听者周围的声源的角位置。使用从双耳信号中提取的听觉线索的逐块处理来估计分布参数。此外,所提出的系统可以进行旋转头运动,以提高本地化和流分离性能。该系统的评估是在包含多个同时活跃的语音和非语音声音放置在不同的位置相对于听众的情况下进行。

英文摘要:

This study describes a binaural machine hearing system that is capable of performing auditory stream segregation in scenarios where multiple sound sources are present. The process of stream segregation refers to the capability of human listeners to group acoustic signals into sets of distinct auditory streams, corresponding to individual sound sources. The proposed computational framework mimics this ability via a probabilistic clustering scheme for joint localization and segregation. This scheme is based on mixtures of von Mises distributions to model the angular positions of the sound sources surrounding the listener. The distribution parameters are estimated using block-wise processing of auditory cues extracted from binaural signals. Additionally, the proposed system can conduct rotational head movements to improve localization and stream segregation performance. Evaluation of the system is conducted in scenarios containing multiple simultaneously active speech and non-speech sounds placed at different positions relative to the listener.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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