Global boundary-centric feature extraction and associated discontinuity metrics
AssigneeApple Inc.
InventorJerome R. Bellegarda
Life of this patent
Estimating the term…
Abstract
Portions from time-domain speech segments are extracted. Feature vectors that represent the portions in a vector space are created. The feature vectors incorporate phase information of the portions. A distance between the feature vectors in the vector space is determined. In one aspect, the feature vectors are created by constructing a matrix W from the portions and decomposing the matrix W. In one aspect, decomposing the matrix W comprises extracting global boundary-centric features from the portions. In one aspect, the portions include at least one pitch period. In another aspect, the portions include centered pitch periods.
Claims1
A machine-implemented method comprising:
- extracting portions from time-domain speech segments, wherein the portions include one or more pitch periods of at least one phoneme;
- ecreating feature vectors that represent the portions in a vector space, the feature vectors incorporating phase information in a time domain of the portions, wherein the creating feature vectors comprises constructing a mathematical representation of the portions;
- determining at least one distance between the feature vectors in the vector space, the at least one distance representing a discontinuity between the portions;
- and
- storing information representing the discontinuity in a discontinuity table that is configured to be used in a speech synthesis process.
Dependencies are inferred from the claim text.