Inherent Doppler Properties of Spatial Audio

Inherent Doppler Properties of Spatial Audio
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空间音频的固有多普勒特性

DOI:
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发表时间:
2010
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通讯作者:
J. Reiss
J. Reiss
中科院分区:
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文献类型:
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作者:
Martin J. Morrell;J. Reiss

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多普勒频移是一种自然发生的现象,如果发射物体到听众的距离不是恒定的,它会改变声音的音调。这些音调偏差以及幅度变化有助于人类定位源位置、速度和运动方向。在本文中,我们研究了空间音频再现方法,以确定移动声源是否存在多普勒频移。我们扩展空间化技术以包括时间方差,以产生多普勒频移。几种不同扬声器布局的录音证明了具有或不具有时变性的多普勒的存在,并将其与预先计算的理论值进行比较。
The Doppler shift is a naturally occurring phenomenon that shifts the pitch of sound if the emitting objects distance to the listener is not a constant. These pitch deviations, alongside amplitude change help humans to localise a sources position, velocity and movement direction. In this paper we investigate spatial audio reproduction methods to determine if Doppler shift is present for a moving sound source. We expand spatialisation techniques to include time-variance in order to produce the Doppler shift. Recordings of several different loudspeaker layouts demonstrate the presence of Doppler with and without time-variance, comparing this to the pre-calculated theoretical values.