Sparse chroma estimation for harmonic non-stationary audio. Juhlin, M., Kronvall, T., Sward, J., & Jakobsson, A. In 2015 23rd European Signal Processing Conference (EUSIPCO), pages 26-30, Aug, 2015. Paper doi abstract bibtex In this work, we extend on our recently proposed block sparse chroma estimator, such that the method also allows for signals with time-varying envelopes. Using a spline-based amplitude modulation of the chroma dictionary, the refined estimator is able to model longer frames than our earlier approach, as well as to model highly time-localized signals, and signals containing sudden bursts, such as trumpet or trombone signals, thus retaining more signal information than other methods for chroma estimation. The performance of the proposed estimator is evaluated on a recorded trumpet signal, clearly illustrating the improved performance, as compared to other used techniques.
@InProceedings{7362338,
author = {M. Juhlin and T. Kronvall and J. Sward and A. Jakobsson},
booktitle = {2015 23rd European Signal Processing Conference (EUSIPCO)},
title = {Sparse chroma estimation for harmonic non-stationary audio},
year = {2015},
pages = {26-30},
abstract = {In this work, we extend on our recently proposed block sparse chroma estimator, such that the method also allows for signals with time-varying envelopes. Using a spline-based amplitude modulation of the chroma dictionary, the refined estimator is able to model longer frames than our earlier approach, as well as to model highly time-localized signals, and signals containing sudden bursts, such as trumpet or trombone signals, thus retaining more signal information than other methods for chroma estimation. The performance of the proposed estimator is evaluated on a recorded trumpet signal, clearly illustrating the improved performance, as compared to other used techniques.},
keywords = {amplitude modulation;audio signals;estimation theory;block sparse chroma estimator;harmonic nonstationary audio;time-varying envelopes;spline-based amplitude modulation;chroma dictionary;time-localized signals;sudden bursts;recorded trumpet signal;Estimation;Harmonic analysis;Splines (mathematics);Europe;Signal processing algorithms;Music;chromagram;amplitude modulation;block sparsity;convex optimization;ADMM},
doi = {10.1109/EUSIPCO.2015.7362338},
issn = {2076-1465},
month = {Aug},
url = {https://www.eurasip.org/proceedings/eusipco/eusipco2015/papers/1570104561.pdf},
}
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