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The Influence of Head Tracking Latency on Binaural Rendering in Simple and Complex Sound Scenes

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Head tracking has been shown to improve the quality of multiple aspects of binaural rendering for single sound sources, such as reduced front-back confusions. This paper presents the results of an AB experiment to investigate the influence of tracker latency on the perceived stability of virtual sounds. The stimuli used are a single frontal sound source and a complex (5 source) sound scene. A comparison is performed between the results for the simple and complex sound scenes and the head motions of the subjects for various latencies. The perceptibility threshold was found to be 10 ms higher for the complex scene compared to the simple one. The subject head movement speeds were found to be 6 degrees/s faster for the complex scene.

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