Frequency offset correction in speech without detecting pitch

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原文链接

NETL

外文摘要：Radio-transmitted speech sometimes contains a residual frequency shift or offset， resulting from incorrect demodulation in single-sideband channels。 Frequency-shifted speech can mask speaker identity and reduce intelligibility。 Therefore， frequency offset will degrade the performance of downstream speech technologies。 Existing offset correction methods require a pitch estimate of the speech signal， which is difficult in noisy radio channels。 We present a new， automatic algorithm for detecting and correcting frequency offset， based on third-order modulation spectral analysis。 Our method is remarkably simple and does not require pitch estimation。 We provide derivations， examples， and a pilot study demonstrating how offset correction improves speaker verification for radio-transmitted speech。

外文关键词：

Modulation spectrumfrequency offsetsingle-sidebandspeaker recognitionspeech enhancement

作者：

Clark, Pascal、Mallidi, Sri Harish、Jansen, Aren、Hermansky, Hynek

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作者单位：

Human Language Technology Center of Excellence, Center for Language and Speech Processing, Johns Hopkins University, Baltimore, Maryland USA|c|

会议名称：

IEEE International Conference on Acoustics, Speech and Signal Processing

会议地点：

Vancouver(CA)

会议母体文献：

2013 IEEE International Conference on Acoustics, Speech and Signal Processing

页码：

7020-7024

出版时间：

2013

DOI：

10.1109/ICASSP.2013.6639023