tailieunhanh - Báo cáo hóa học: " Research Article Subband Approach to Bandlimited Crosstalk Cancellation System in Spatial Sound 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 Subband Approach to Bandlimited Crosstalk Cancellation System in Spatial Sound Reproduction | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 71948 9 pages doi 2007 71948 Research Article Subband Approach to Bandlimited Crosstalk Cancellation System in Spatial Sound Reproduction Mingsian R. Bai and Chih-Chung Lee Department of Mechanical Engineering National Chiao-Tung University 1001 Ta-Hsueh Road Hsin-Chu 300 Taiwan Received 27 December 2005 Revised 1 May 2006 Accepted 16 July 2006 Recommended by Yuan-Pei Lin Crosstalk cancellation system CCS plays a vital role in spatial sound reproduction using multichannel loudspeakers. However this technique is still not of full-blown use in practical applications due to heavy computation loading. To reduce the computation loading a bandlimited CCS is presented in this paper on the basis of subband filtering approach. A pseudoquadrature mirror filter QMF bank is employed in the implementation of CCS filters which are bandlimited to 6 kHz where human s localization is the most sensitive. In addition a frequency-dependent regularization scheme is adopted in designing the CCS inverse filters. To justify the proposed system subjective listening experiments were undertaken in an anechoic room. The experiments include two parts the source localization test and the sound quality test. Analysis of variance ANOVA is applied to process the data and assess statistical significance of subjective experiments. The results indicate that the bandlimited CCS performed comparably well as the fullband CCS whereas the computation loading was reduced by approximately eighty percent. Copyright 2007 M. R. Bai and . Lee. 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 fundamental idea of spatial audio reproduction is to synthesize a virtual sound image so that the listener perceives as if the .