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arXiv · 1605.07809

Using instantaneous frequency and aperiodicity detection to estimate F0 for high-quality speech synthesis

Hideki Kawahara·Yannis Agiomyrgiannakis·Heiga Zen
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Abstract

This paper introduces a general and flexible framework for F0 and aperiodicity (additive non periodic component) analysis, specifically intended for high-quality speech synthesis and modification applications. The proposed framework consists of three subsystems: instantaneous frequency estimator and initial aperiodicity detector, F0 trajectory tracker, and F0 refinement and aperiodicity extractor. A preliminary implementation of the proposed framework substantially outperformed (by a factor of 10 in terms of RMS F0 estimation error) existing F0 extractors in tracking ability of temporally varying F0 trajectories. The front end aperiodicity detector consists of a complex-valued wavelet analysis filter with a highly selective temporal and spectral envelope. This front end aperiodicity detector uses a new measure that quantifies the deviation from periodicity. The measure is less sensitive to slow FM and AM and closely correlates with the signal to noise ratio.

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Hideki Kawahara, Yannis Agiomyrgiannakis, Heiga Zen. 2016-07-22. Using instantaneous frequency and aperiodicity detection to estimate F0 for high-quality speech synthesis. https://doi.org/10.21437/ssw.2016-36

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