A novel robust feature of speech signal based on the Mellin transform for speaker-independent speech recognition
نویسندگان
چکیده
This paper presents a novel kind of speech feature which is the modified Mellin transform of the log-spectrum of the speech signal (short for MMTLS). Because of the scale invariance property of the modified Mellin transform, the new feature is insensitive to the variation of the vocal tract length among individual speakers, and thus it is more appropriate for speaker-independent speech recognition than the popular used cepstrum. The preliminary experiments show that the performance of the MMTLS-based method is much better in comparison with those of the LPCand MFC-based methods. Moreover, the error rate of this method is very consistent for different outlier speakers.
منابع مشابه
A Novel Robust Speech Feature Based on the Mellin Transform and Speaker Normalizatuin
A novel robust feature of speech signal has been proposed by us in [1]. The new feature is the modified Mellin transform of the log-spectra of speech signal and is short for MMTLS. Due to the scale invariance property of the modified Mellin transform, the MMTLS is insensitive to the vocal tract length of different speakers. Thus it is more appropriate for speakerindependent speech recognition t...
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