3D Reproduction of Room Auralizations by Combining Intensity Panning, Crosstalk Cancellation and Ambisonics
3D Reproduction of Room Auralizations by Combining Intensity Panning, Crosstalk Cancellation and Ambisonics
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通过结合强度平移、串扰消除和高保真度立体声响技术来 3D 再现房间可听度
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
M. Vorländer
中科院分区：
文献类型：
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作者：
S. Pelzer;B. Masiero;M. Vorländer
流行的室内声学模拟使用混合模型来精确计算早期镜面反射，并使用随机算法来计算后期漫衰减。将脉冲响应分为早期和晚期部分在心理声学上也是合理的。早期部分负责源的定位以及空间和频谱感知，这使得其时频结构的正确再现变得重要。相比之下，后面的部分负责宽敞和包围感、与房间相关的属性及其弥漫的衰变。然而，在可听系统中，整个脉冲响应的再现是通过相同的再现系统和方法完成的，即使存在更适合相干再现（对于脉冲响应的早期到达很重要）和其他更适合非相干场（脉冲响应的混响尾部）再现的系统。提出了一种混合方法，该方法使用一个公共扬声器系统来同时呈现不同的再现方法。具有强定位线索的方法（例如通过串扰消除的双耳或 VBAP）用于直达声和早期反射，而具有更高沉浸感和包围感的方法（例如高保真度立体声响复制）用于漫反射。
Popular room acoustic simulations use hybrid models for precise calculation of the early specular reflections and stochastic algorithms for the late diffuse decay. Splitting the impulse response into early and late parts is also psychoacoustically reasonable. The early part is responsible for the localization and the spatial and spectral perception of sources, which makes the correct reproduction of its time-frequency structure important. In contrast the later part is responsible for the sense of spaciousness and envelopment, properties related to the room and its diffuse decay. Nevertheless, in auralization systems the reproduction of the whole impulse response is done through the same reproduction system and method, even though there are systems better suited to coherent reproduction (important for the early arrivals of an impulse response) and others better suited for the reproduction of incoherent fields (the reverberant tail of an impulse response). A hybrid approach is presented which uses one common loudspeaker system for the simultaneous rendering of different reproduction methods. A method with strong localization cues such as binaural via crosstalk cancellation or VBAP is used for the direct sound and early reflections, while a method with higher immersion and envelopment such as Ambisonics is used for the diffuse decay.