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 Automatic Detection and Recognition of Tonal Bird Sounds in Noisy Environments | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2011 Article ID 982936 10 pages doi 2011 982936 Research Article Automatic Detection and Recognition of Tonal Bird Sounds in Noisy Environments Peter JanCoviC EURASIP Member and Munevver Kokuer School of Electronic Electrical Computer Engineering University of Birmingham Birmingham B15 2TT UK Correspondence should be addressed to Peter Jancovic Received 13 September 2010 Revised 24 December 2010 Accepted 7 February 2011 Academic Editor Tan Lee Copyright 2011 P. Jancovic and M. Kokuer. 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. This paper presents a study of automatic detection and recognition of tonal bird sounds in noisy environments. The detection of spectro-temporal regions containing bird tonal vocalisations is based on exploiting the spectral shape to identify sinusoidal components in the short-time spectrum. The detection method provides tonal-based feature representation that is employed for automatic bird recognition. The recognition system uses Gaussian mixture models to model 165 different bird syllables produced by 95 bird species. Standard models as well as models compensating for the effect of the noise are employed. Experiments are performed on bird sound recordings corrupted by White noise and real-world environmental noise. The proposed detection method shows high detection accuracy of bird tonal components. The employed tonal-based features show significant recognition accuracy improvements over the Mel-frequency cepstral coefficients in both standard and noise-compensated models and strong robustness to mismatch between the training and testing conditions. 1. Introduction Identification of birds the study of their behavior and the way of their communication is .
