Expanding the length of short utterances for short-duration language recognition

doi:10.16511/j.cnki.qhdxxb.2018.25.015

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Abstract The language recognition (LR) accuracy is often significantly reduced when the test utterance duration is as short as 10 s or less. This paper describes a method to extend the utterance length using time-scale modification (TSM) which changes the speech rate without changing the spectral information. The algorithm first converts an utterance to several time-stretched or time-compressed versions using TSM. These modified versions with different speech rates are concatenated together with the original one to form a long-duration signal, which is subsequently fed into the LR system. Tests demonstrate that this duration modification method dramatically improves the performance for short utterances.

Keywords language recognition short-duration time-scale modification speech rate

ZTFLH:

TN912.3

Issue Date: 15 March 2018

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	MIAO Xiaoxiao
	ZHANG Jian
	SUO Hongbin
	ZHOU Ruohua
	YAN Yonghong

Cite this article:

MIAO Xiaoxiao,ZHANG Jian,SUO Hongbin, et al. Expanding the length of short utterances for short-duration language recognition[J]. Journal of Tsinghua University(Science and Technology), 2018, 58(3): 254-259.

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http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2018.25.015 OR http://jst.tsinghuajournals.com/EN/Y2018/V58/I3/254

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