Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Evaluating Environmental Sounds from a Presence Perspective for Virtual Reality Applications Rolf Nordahl | Hindawi Publishing Corporation EURASIP Journal on Audio Speech and Music Processing Volume 2010 Article ID 426937 10 pages doi 2010 426937 Research Article Evaluating Environmental Sounds from a Presence Perspective for Virtual Reality Applications RolfNordahl Medialogy Aalborg University Copenhagen Lautrupvang 15 2750 Ballerup Denmark Correspondence should be addressed to Rolf Nordahl rn@ Received 15 January 2010 Accepted 31 August 2010 Academic Editor Andrea Valle Copyright 2010 Rolf Nordahl. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. We propose a methodology to design and evaluate environmental sounds for virtual environments. We propose to combine physically modeled sound events with recorded soundscapes. Physical models are used to provide feedback to users actions while soundscapes reproduce the characteristic soundmarks of an environment. In this particular case physical models are used to simulate the act of walking in the botanical garden of the city of Prague while soundscapes are used to reproduce the particular sound of the garden. The auditory feedback designed was combined with a photorealistic reproduction of the same garden. A between-subject experiment was conducted where 126 subjects participated involving six different experimental conditions including both uni- and bimodal stimuli auditory and visual . The auditory stimuli consisted of several combinations of auditory feedback including static sound sources as well as self-induced interactive sounds simulated using physical models. Results show that subjects motion in the environment is significantly enhanced when dynamic sound sources and sound of egomotion are rendered in the environment. 1. Introduction The simulation of environmental sounds for virtual reality VR applications has reached a level of .
