tailieunhanh - Báo cáo hóa học: " Research Article Virtual Reality System with Integrated Sound Field Simulation and Reproduction"

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 Virtual Reality System with Integrated Sound Field Simulation and Reproduction | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 70540 19 pages doi 2007 70540 Research Article Virtual Reality System with Integrated Sound Field Simulation and Reproduction Tobias Lentz 1 Dirk Schroder 1 Michael Vorlander 1 and Ingo Assenmacher2 1 Institute of Technical Acoustics RWTH Aachen University Neustrasse 50 52066 Aachen Germany 2 Virtual Reality Group RWTH Aachen University Seffenter Weg 23 52074 Aachen Germany Received 1 May 2006 Revised 2 January 2007 Accepted 3 January 2007 Recommended by Tapio Lokki A real-time audio rendering system is introduced which combines a full room-specific simulation dynamic crosstalk cancellation and multitrack binaural synthesis for virtual acoustical imaging. The system is applicable for any room shape normal long flat coupled independent of the a priori assumption of a diffuse sound field. This provides the possibility of simulating indoor or outdoor spatially distributed freely movable sources and a moving listener in virtual environments. In addition to that near-to-head sources can be simulated by using measured near-field HRTFs. The reproduction component consists of a headphone-free reproduction by dynamic crosstalk cancellation. The focus of the project is mainly on the integration and interaction of all involved subsystems. It is demonstrated that the system is capable of real-time room simulation and reproduction and thus can be used as a reliable platform for further research on VR applications. Copyright 2007 Tobias Lentz et al. 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. 1. INTRODUCTION Virtual reality VR is an environment generated in the computer with which the user can operate and interact in real time. One characteristic of VR is a three-dimensional and multimodal interface .