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@@ -1,6 +1,6 @@
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# Speaker confusion model
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-The Voice Type Classifier (VTC) is a speech detection algorithm that classifies each detected speech segment into one of four classes: Female adults, Male adults, the Key child, and Other children. This allows to measure the input children are exposed to as they are acquiring language, as well as their own speech production.
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+The Voice Type Classifier (VTC) is a speech detection algorithm that classifies each detected speech segment into one of four classes: Female adults, Male adults, the Key child wearing the recording device, and Other surrounding children. This allows to measure the input children are exposed to as they are acquiring language, as well as their own speech production.
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However, the VTC is not perfectly accurate, and the speaker may be misidentified (or, speech may be left undetected).
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For instance, the key child is occasionally confused with other children. Not only such confusions have consequences on the amount of speech measured within each of these four categories, but they also tend to generate spurious correlations
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