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• W2056639312 startingPage "1824" @default.
• W2056639312 abstract "We propose a two-dimensional (2-D) multicomponent amplitude-modulation, frequency-modulation (AM-FM) model for a spectrogram patch corresponding to voiced speech, and develop a new demodulation algorithm to effectively separate the AM, which is related to the vocal tract response, and the carrier, which is related to the excitation. The demodulation algorithm is based on the Riesz transform and is developed along the lines of Hilbert-transform-based demodulation for 1-D AM-FM signals. We compare the performance of the Riesz transform technique with that of the sinusoidal demodulation technique on real speech data. Experimental results show that the Riesz-transform-based demodulation technique represents spectrogram patches accurately. The spectrograms reconstructed from the demodulated AM and carrier are inverted and the corresponding speech signal is synthesized. The signal-to-noise ratio (SNR) of the reconstructed speech signal, with respect to clean speech, was found to be 2 to 4 dB higher in case of the Riesz transform technique than the sinusoidal demodulation technique." @default.
• W2056639312 created "2016-06-24" @default.
• W2056639312 creator A5005652970 @default.
• W2056639312 creator A5014969176 @default.
• W2056639312 date "2015-11-01" @default.
• W2056639312 modified "2023-09-24" @default.
• W2056639312 title "Demodulation of Narrowband Speech Spectrograms Using the Riesz Transform" @default.
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• W2056639312 doi "https://doi.org/10.1109/taslp.2015.2449088" @default.
• W2056639312 hasPublicationYear "2015" @default.
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