Dynamic Spectral Envelope Modeling for Timbre Analysis of Musical Instrument Sounds
Dynamic Spectral Envelope Modeling for Timbre Analysis of Musical Instrument Sounds
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DOI：
10.1109/tasl.2009.2036300
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发表时间：
2010-03-01
影响因子：
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通讯作者：
Sikora, Thomas
中科院分区：
文献类型：
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作者：
Burred, Juan Jose;Roebel, Axel;Sikora, Thomas
我们提出了一个计算模型的乐器的声音，专注于捕捉频谱包络的动态行为。通过正弦建模和随后的频率插值，在进行主成分分析之前，提取属于每个仪器的不同音符的一组频谱-时间包络。在所得到的降维空间中的包络的原型演化被建模为一个非平稳高斯过程。这导致在一个紧凑的表示形式的一组原型曲线在特征空间中，或等效的原型频谱-时间包络在时间-频率域。最后，所获得的模型成功地评估的背景下，两个音乐内容分析任务：乐器样本的分类和单声道复调混合物中的乐器检测。
We present a computational model of musical instrument sounds that focuses on capturing the dynamic behavior of the spectral envelope. A set of spectro-temporal envelopes belonging to different notes of each instrument are extracted by means of sinusoidal modeling and subsequent frequency interpolation, before being subjected to principal component analysis. The prototypical evolution of the envelopes in the obtained reduced-dimensional space is modeled as a nonstationary Gaussian Process. This results in a compact representation in the form of a set of prototype curves in feature space, or equivalently of prototype spectro-temporal envelopes in the time-frequency domain. Finally, the obtained models are successfully evaluated in the context of two music content analysis tasks: classification of instrument samples and detection of instruments in monaural polyphonic mixtures.