作者
Wenwu Wang, Yuhui Luo, Jonathon A Chambers, Saeid Sanei
发表日期
2008
期刊
EURASIP Journal on Advances in Signal Processing
卷号
2008
期号
19
出版商
Hindawi Publishing Corporation
简介
A novel approach for onset detection of musical notes from audio signals is presented. In contrast to most commonly used conventional approaches, the proposed method features new detection functions constructed from the linear temporal bases that are obtained from the decomposition of musical spectra using nonnegative matrix factorization (NMF). Three forms of detection function, namely, first-order difference function, psychoacoustically motivated relative difference function, and constant-balanced relative difference function, are considered. As the approach works directly on input data, no prior knowledge or statistical information is therefore required. Practical issues, including the choice of the factorization rank and detection robustness to instruments, are also examined experimentally. Due to the scalability issue with the generated nonnegative matrix, the proposed method is only applied to …
引用总数
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