Abstract: A technique to enhance the quality of Text-to-Speech (TTS) based Singing Voice generation is disclosed. The present invention efficiently preserves the speaker identity and improves sound quality by incorporating speaker-independent natural singing information into TTS-based Speech-to-Singing (STS). The Template-based Text-to-Singing (TTTS) system merges qualities of a singing voice generated from a TTS system with qualities of a singing voice generated from an actual voice singing the song. The qualities are represented in terms of Mel-generalized cepstrum (MGC) coefficients. In particular, low-order MGC coefficients from the TTS-based singing voice with high-order MGC coefficients from the voice of an actual singer.

Abstract: A voice coder configured to resolve periodic and aperiodic components of spectra is disclosed. The method of voice coding includes parsing the speech signal into a plurality of speech frames; for each of the plurality of speech frames: (a) generating the spectra for the speech frame, (b) parsing the spectra of the speech frame into a plurality of sub-bands, (c) transforming each of the plurality of sub-bands into a time-domain envelope signal, and (d) generating a plurality of sub-band voicing factors, wherein each sub-band voicing factor indicates the harmonicity of one of the plurality of sub-bands, and each sub-band voicing factor is based on the periodicity of one of said time-domain envelope signals associated with one of the plurality of sub-bands.

Abstract: A platform that is configured to be removably placed symmetrically on or about a user's head has at least a first transducer configured to capture vibration of the user's skull or facial movement generated by the user's voice activity and to detect the user's speaking activity. This first transducer converts the vibration or facial movement into a first electrical audio signal. The electrical audio signal from the first transducer is processed by circuitry or embodied software as voiced frames and/or as unvoiced frames, in which the voiced frames and/or the unvoiced frames are defined based at least on the first electrical audio signal. Multiple embodiments follow from this: where the first transducer is a vibration sensor; where voice is captured by an air microphone and filtering adaptation differs for the voiced versus unvoiced frames as defined by the first transducer, and another with at least three air microphones.

Abstract: A platform that is configured to be removably placed symmetrically on or about a user's head has at least a first transducer configured to capture vibration of the user's skull or facial movement generated by the user's voice activity and to detect the user's speaking activity. This first transducer converts the vibration or facial movement into a first electrical audio signal. The electrical audio signal from the first transducer is processed by circuitry or embodied software as voiced frames and/or as unvoiced frames, in which the voiced frames and/or the unvoiced frames are defined based at least on the first electrical audio signal. Multiple embodiments follow from this: where the first transducer is a vibration sensor; where voice is captured by an air microphone and filtering adaptation differs for the voiced versus unvoiced frames as defined by the first transducer, and another with at least three air microphones.