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Modification of Velvet Noise for Speech Waveform Generation by Using Vocoder-Based Speech Synthesizer
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2019/03/01
Online ISSN: 1745-1361
Type of Manuscript: LETTER
Category: Speech and Hearing
noise generation, white noise, velvet noise, zero-frequency component, speech analysis/synthesis,
Full Text: FreePDF(294.1KB)
This paper introduces a new noise generation algorithm for vocoder-based speech waveform generation. White noise is generally used for generating an aperiodic component. Since short-term white noise includes a zero-frequency component (ZFC) and inaudible components below 20 Hz, they are reduced in advance when synthesizing. We propose a new noise generation algorithm based on that for velvet noise to overcome the problem. The objective evaluation demonstrated that the proposed algorithm can reduce the unwanted components.