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arXiv 2501.05652eess.AS
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基于子带域多假设回声消除器的声学场景分析

Sub-band Domain Multi-Hypothesis Acoustic Echo Canceler Based Acoustic Scene Analysis

Benjamin J Southwell, Yin-Lee Ho, David Gunawan

AI总结:

本文提出利用子带域多假设回声消除器的统计特征进行声学场景分析,通过多策略互补滤波提取判别性特征,并在真实数据上验证了有效性。

摘要:

本文介绍了一种新颖的声学场景分析方法,该方法利用从子带域多假设回声消除器(SDMH-AEC)中提取的统计量集合。设计良好的SDMH-AEC采用多种自适应滤波策略,这些策略在收敛、扰动和稳态条件下可能具有互补的行为。通过聚合各子带的统计量,我们推导出一个特征向量,该向量在区分不同声学事件和估计声学参数方面表现出强大的判别能力。SDMH-AEC滤波器的互补性提供了丰富的信息源,可以以极低的成本提取用于声学场景分析任务。我们通过包含双讲、回声路径变化以及全双工设备被物理移动的事件的真实数据实验,证明了所提出方法的有效性。提取的特征使得能够利用现有的回声消除算法和技术进行声学场景分析。

英文摘要:

This paper introduces a novel approach for acoustic scene analysis by exploiting an ensemble of statistics extracted from a sub-band domain multi-hypothesis acoustic echo canceler (SDMH-AEC). A well-designed SDMH-AEC employs multiple adaptive filtering strategies with potentially complementary behaviours during convergence, perturbations, and steady-state conditions. By aggregating statistics across the sub-bands, we derive a feature vector that exhibits strong discriminative power for distinguishing different acoustic events and estimating acoustic parameters. The complementary nature of the SDMH-AEC filters provides a rich source of information that can be extracted at insignificant cost for acoustic scene analysis tasks. We demonstrate the effectiveness of the proposed approach experimentally with real data containing double-talk, echo path change and events where the full-duplex device is physically moved. The extracted features enable acoustic scene analysis using existing echo cancellation algorithms and techniques.

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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