This paper presents a study on the influence of the directional sound sources with the use of the directivity patterns. This contribution also includes a comparison to the work done by Wendt et al. where several directivity pattern designs used to gradually control the auditory source distance in a room were showed. While the tests of Wendt et al. were done by auralizing source and room using a loudspeaker ring in an anechoic chamber, this study aims at investigating whether the effect performs similarly in binaural auralization over headphone playback. The study includes not only the auditory source distance but also tries to discover the influence of auralized room characteristics, source-to-receiver distance, and signal on auditory externalization.
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