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Báo cáo hóa học: " Research Article Audio Key Finding: Considerations in System Design and Case Studies on Chopin’s 24 Preludes"

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 Audio Key Finding: Considerations in System Design and Case Studies on Chopin’s 24 Preludes | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 56561 15 pages doi 10.1155 2007 56561 Research Article Audio Key Finding Considerations in System Design and Case Studies on Chopin s 24 Preludes Ching-Hua Chuan1 and Elaine Chew2 1 Integrated Media Systems Center Department of Computer Science USC Viterbi School of Engineering University of Southern California Los Angeles CA 90089-0781 USA 2 Integrated Media Systems Center Epstein Department of Industrial and Systems Engineering USC Viterbi School of Engineering University of Southern California Los Angeles CA 90089-0193 USA Received 8 December 2005 Revised 31 May 2006 Accepted 22 June 2006 Recommended by George Tzanetakis We systematically analyze audio key finding to determine factors important to system design and the selection and evaluation of solutions. First we present a basic system fuzzy analysis spiral array center of effect generator algorithm with three key determination policies nearest-neighbor NN relative distance RD and average distance AD . AD achieved a 79 accuracy rate in an evaluation on 410 classical pieces more than 8 higher RD and NN. We show why audio key finding sometimes outperforms symbolic key finding. We next propose three extensions to the basic key finding system the modified spiral array mSA fundamental frequency identification F0 and post-weight balancing PWB to improve performance with evaluations using Chopin s Preludes Romantic repertoire was the most challenging . F0 provided the greatest improvement in the first 8 seconds while mSA gave the best performance after 8 seconds. Case studies examine when all systems were correct or all incorrect. Copyright 2007 C.-H. Chuan and E. Chew. 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 Our goal in this paper