Low Frequency Crosstalk Cancellation and Its Relationship to Amplitude Panning

Higher-Order Stereophony is a new spatial audio approach which extends classic stereo to higher order soundfield reproduction and generalised loudspeaker arrays, in a similar manner to Higher-Order Ambisonics. Higher-Order Stereophony reproduces the soundfield accurately across a line only, which must be orientated to align with the listener's interaural axis. This work introduces Dynamic Higher-Order Stereophony, which expands the technique to include listener tracking using dynamic amplitude panning. This means the soundfield is reproduced across a dynamically moving line dependent on the listener's orientation, to ensure correct reproduction of a desired set of binaural signals. A number of classic stereo approaches are shown to be special cases of first order Stereophony, and decoders to reproduce Higher-Order Ambisonics content using the new technique presented. A listening test comparing Higher-Order Stereophony and Ambisonics reproduction, low-passed at 4 kHz to reduce spatial aliasing artefacts, shows that the former technique can perform equally well as Ambisonics to the same truncation order with respect to positional properties of a virtual sound source, while using a smaller number of loudspeakers. The approach can also produce rear virtual sources using only loudspeakers positioned in the front of the listener, however with the requirement of listener tracking.

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Low Frequency Crosstalk Cancellation and Its Relationship to Amplitude Panning

Cited by 3 publications

References 13 publications

Experimental Study of Various Methods for Low Frequency Spatial Audio Reproduction Over Loudspeakers

Experimental Study of Various Methods for Low Frequency Spatial Audio Reproduction Over Loudspeakers

Spatial Audio Panning With Elevated Sources Using Horizontal-Only Reproduction Loudspeakers

Dynamic Higher-Order Stereophony

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