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Predominant pitch contour extraction from audio signals

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4 Author(s)
H. Malik ; Multimedia Syst. Lab, Chicago, IL, USA ; A. Khokhar ; R. Ansari ; B. Cappe de Baillon

This paper describes a computationally efficient method for estimating the predominant pitch in audio recordings. The proposed method is intended for building a content-based indexing and retrieval system that can search in a audio database using the melody line of a complex input audio sample. Available pitch estimation methods are effective primarily when dealing with recordings of human voice that is either unaccompanied or accompanied with one or two musical instruments. These methods perform poorly when applied to pitch estimation in complex music signals due to their reliance on directly estimating the fundamental frequency (F0), a task that is affected by the overlapping presence in frequency of instrumental sounds such as those of guitar, piano, etc. In our method we exploit the higher harmonic structure of the human voice to develop a low-complexity system for estimating predominant pitch. Experimental results show that this computationally efficient method provides a robust estimate of predominant pitch in real-world audio signals with 85% success rate.

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Multimedia and Expo, 2002. ICME '02. Proceedings. 2002 IEEE International Conference on  (Volume:2 )

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