Patent ID: 11869482
Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. An apparatus for generating a speech waveform, comprising:
a receiving module, for receiving fundamental frequency information, glottal features and vocal tract features associated with an input, wherein the glottal features include a phase feature, a shape feature, and an energy feature, the phase feature being represented by phase vectors, the shape feature being represented by shape vectors, and the energy feature being represented by energy vectors;
a glottal waveform generating module, for generating a glottal waveform based on the fundamental frequency information and the glottal features through a first neural network model, wherein the glottal waveform generating module further comprises:
a forming module, for forming a phase matrix from the phase vectors;
a constructing module, for constructing a phase-based weighting matrix by converting the phase matrix nonlinearly through a first part of the first neural network model;
a characteristic waveform feature generating module, for generating a characteristic waveform feature based on the fundamental frequency information, the shape vectors and the energy vectors through a second part of the first neural network model; and
an obtaining module, for obtaining the glottal waveform based on the phase-based weighting matrix and the characteristic waveform feature; and

a speech waveform generating module, for generating a speech waveform based on the glottal waveform and the vocal tract features through a second neural network model.