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Conference Papers Year : 2015

Kernel additive modeling for interference reduction in multi-channel music recordings

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Abstract

When recording a live musical performance, the different voices, such as the instrument groups or soloists of an orchestra, are typically recorded in the same room simultaneously, with at least one microphone assigned to each voice. However, it is difficult to acoustically shield the microphones. In practice, each one contains interference from every other voice. In this paper, we aim to reduce these interferences in multi-channel recordings to recover only the isolated voices. Following the recently proposed Kernel Additive Modeling framework, we present a method that iteratively estimates both the power spectral density of each voice and the corresponding strength in each microphone signal. With this information, we build an optimal Wiener filter, strongly reducing interferences. The trade-off between distortion and separation can be controlled by the user through the number of iterations of the algorithm. Furthermore, we present a computationally effective approximation of the iterative procedure. Listening tests demonstrate the effectiveness of the method.
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Dates and versions

hal-01116686 , version 1 (13-02-2015)
hal-01116686 , version 2 (18-02-2015)

Identifiers

  • HAL Id : hal-01116686 , version 2

Cite

Thomas Prätzlich, Rachel Bittner, Antoine Liutkus, Meinard Müller. Kernel additive modeling for interference reduction in multi-channel music recordings. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2015, Brisbane, Australia. ⟨hal-01116686v2⟩
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