Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Detection of transitions between broad phonetic classes in a speech
  signal   Detection of transitions between broad phonetic classes in a speech signal is
an important problem which has applications such as landmark detection and
segmentation. The proposed hierarchical method detects silence to non-silence
transitions, high amplitude (mostly sonorants) to low ampli- tude (mostly
fricatives/affricates/stop bursts) transitions and vice-versa. A subset of the
extremum (minimum or maximum) samples between every pair of successive
zero-crossings is selected above a second pass threshold, from each bandpass
filtered speech signal frame. Relative to the mid-point (reference) of a frame,
locations of the first and the last extrema lie on either side, if the speech
signal belongs to a homogeneous segment; else, both these locations lie on the
left or the right side of the reference, indicating a transition frame. When
tested on the entire TIMIT database, of the transitions detected, 93.6% are
within a tolerance of 20 ms from the hand labeled boundaries. Sonorant,
unvoiced non-sonorant and silence classes and their respective onsets are
detected with an accuracy of about 83.5% for the same tolerance. The results
are as good as, and in some respects better than the state-of-the-art methods
for similar tasks.

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The categories of this paper are: econ
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
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The categories of this paper are: q-alg
3
The categories of this paper are: physics
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The categories of this paper are: patt-sol
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The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
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The categories of this paper are: supr-con
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph