Source-Width Extension Technique for Sound Field Reproduction Systems
A source width extension technique for the sound field reproduction system is proposed. The extension of the perceived source width has been extensively discussed for the discrete multichannel systems, and many of them make use of the all-pass filters and pseudo-stereo technique to decorrelate two signals at the listener’s ear positions. However, for the sound field reproduction, such property is needed to be realized at the various listener positions in space. In this paper, we attempt to design a sound field that produces decorrelated ear signals at various listener positions. The radiation pattern from a virtual sound source is modified such that any listener heading to the virtual source location can experience the same amount of source-widening effect.
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