Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Improved multiple birdsong tracking with distribution derivative method
  and Markov renewal process clustering   Segregating an audio mixture containing multiple simultaneous bird sounds is
a challenging task. However, birdsong often contains rapid pitch modulations,
and these modulations carry information which may be of use in automatic
recognition. In this paper we demonstrate that an improved spectrogram
representation, based on the distribution derivative method, leads to improved
performance of a segregation algorithm which uses a Markov renewal process
model to track vocalisation patterns consisting of singing and silences.

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The categories of this paper are: astro-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-lat
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The categories of this paper are: nlin
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The categories of this paper are: hep-th
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The categories of this paper are: stat
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The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
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The categories of this paper are: ao-sci
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The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
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The categories of this paper are: econ
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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn