Influence of static and dynamic virtual auditory display on near-field distance perception
Virtual auditory display(VAD)is a tool in the researches of auditory distance perception.It can be subdivided into conventional static VAD and advanced dynamic VAD.Static VAD is inclined to create the per-ception of in-head-localization and influences the distance judgment,and thereby spoils the final experimental results.However,static VADs were used in many previous experiments,resulting in controversial conclusions.By using static and dynamic VADs,the present work explores the influence of static and dynamic VAD on the auditory distance perception.Non-individualized head related transfer functions were used for binaural synthesis.The resultant binaural signals of seven target distances from 0.20 m to 1.00 m and seven horizontal azimuths from 0° to 180° were presented by headphone.Results of psychoacoustic experiments indicated that for static VAD,subjects reported the perception of in-head-localization.In contrast,dynamic VAD created dy-namic cue for externalized perception.Statistical analysis reveals the significant difference between the results of distance perception of static and dynamic VAD.A dynamic VAD should be used as a tool in the experiments of distance perception because its results are more consistent with those of actual sound source.Moreover,dynamic VADs should be also used in practical spatial sound to create different distance perceptions.
万方数据
维普
