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This work presents an approach for pitch extraction based on Grating Compression Transform (GCT) on harmonically-enhanced Modified Group-Delay-gram (Modgdgram). The work explores the use of peakedness and high resolution properties of the group delay functions and the ability of GCT to smear harmonically related components in the spectrum and to track pitch across frames. The power spectrum of the...
Spectral representation of speech is complete when both the Fourier transform magnitude and phase spectra are specified. In conventional speech recognition systems, features are generally derived from the short-time magnitude spectrum. Although the importance of Fourier transform phase in speech perception has been realized, few attempts have been made to extract features from it. This is primarily...
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