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首页> 外文会议>2016 IEEE International Workshop on Acoustic Signal Enhancement >Extraction of exterior field from a mixed sound field for 2D height-invariant sound propagation
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Extraction of exterior field from a mixed sound field for 2D height-invariant sound propagation

机译：从混合声场中提取外部场以进行二维高度不变的声音传播

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摘要

Any sound field caused by one or more sound sources takes the form of an interior, exterior or a mixed sound field based on the source locations. The recording and reproduction of interior or exterior sound fields in terms of harmonic decomposition has been extensively studied in the literature, however the challenging task of separating them in a mixed field remains largely unexplored. But in nature, the interior and exterior sound fields often co-exist, hence their isolation can be very useful in many acoustic processes. In this paper, we discuss a method to extract the exterior field from a mixed sound field for 2D height-invariant sound propagation. Such an extraction method can be employed to record a sound field in a noisy or interfered room or to perform dereverberation in a reverberant room where the sound fields due to the source signal and its reflections superimpose each other. We demonstrate two practical uses of the proposed method in the forms of (i) an exterior sound field recording in a mixed wave field and (ii) speech dereverberation in a simulated reverberant room.
机译：由一个或多个声源引起的任何声场都基于声源位置采用内部，外部或混合声场的形式。关于内部或外部声场在谐波分解方面的记录和再现已在文献中进行了广泛的研究，但是在混合声场中将其分离的艰巨任务仍未得到充分研究。但是在自然界中，内部和外部声场通常并存，因此它们的隔离在许多声学过程中可能非常有用。在本文中，我们讨论了一种从混合声场提取外部场以进行2D高度不变的声音传播的方法。这种提取方法可以用于在嘈杂或受干扰的房间中记录声场，或在混响房间中执行混响去除，在混响房间中由于源信号及其反射而产生的声场相互叠加。我们以（i）在混合波场中记录外部声场和（ii）在模拟混响室中进行语音去混响的形式演示了该方法的两种实际用途。

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