A Direct Comparison of Localisation Performance When Using First, Third and Fifth Order Ambisonics For Real Loudspeaker And Virtual Loudspeaker Rendering
Ambisonics is being used in applications such as virtual reality to render 3-dimensional sound fields over headphones through the use of virtual loudspeakers, the performance of which has previously been assessed up to third order. Through a localisation test, the performance of first, third and fifth order Ambisonics is investigated for optimized real and virtual loudspeaker arrays utilising a generic HRTF set. Results indicate a minor improvement in localisation accuracy when using fifth order over third though both show vast improvement over first. It is shown that individualised HRTFs are required to fully investigate the performance of Ambisonic binaural rendering.
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