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: On Building Immersive Audio Applications Using Robust Adaptive Beamforming and Joint Audio-Video Source Localization | Hindawi Publishing Corporation EURASIP Journal on Applied Signal Processing Volume 2006 Article ID 40960 Pages 1-12 DOI ASP 2006 40960 On Building Immersive Audio Applications Using Robust Adaptive Beamforming and Joint Audio-Video Source Localization J. A. Beracoechea S. Torres-Guijarro L. García and F. J. Casajus-Quiros Departamento de Senales Sistemas y Radiocomunicaciones Universidad Politecnica de Madrid 28040 Madrid Spain Received 20 December 2005 Revised 26 April 2006 Accepted 11 June 2006 This paper deals with some of the different problems strategies and solutions of building true immersive audio systems oriented to future communication applications. The aim is to build a system where the acoustic field of a chamber is recorded using a microphone array and then is reconstructed or rendered again in a different chamber using loudspeaker array-based techniques. Our proposal explores the possibility of using recent robust adaptive beamforming techniques for effectively estimating the original sources of the emitting room. A joint audio-video localization method needed in the estimation process as well as in the rendering engine is also presented. The estimated source signal and the source localization information drive a wave field synthesis engine that renders the acoustic field again at the receiving chamber. The system performance is tested using MUSHRA-based subjective tests. Copyright 2006 J. A. Beracoechea 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 The history of spatial audio started almost 70 years ago. In a patent filled in 1931 Blumlein 1 described the basics of stereo recording and reproduction which can be considered as the first true spatial audio system. At that time the possibility of creating phantom sources supposed a major breakthrough over .
