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    Contrastive Learning and Masked Modeling for End-To-End Self-Supervised Pre-Training
    63.
    发明公开
    Contrastive Learning and Masked Modeling for End-To-End Self-Supervised Pre-Training 审中-公开

    公开(公告)号：US20240104352A1

    公开(公告)日：2024-03-28

    申请号：US18012391

    申请日：2022-07-28

    Applicant: Google LLC

    Inventor： Yu Zhang ,  Yu-An Chung ,  Wei Han ,  Chung-Cheng Chiu ,  Weikeng Qin ,  Ruoming Pang ,  Yonghui Wu

    IPC: G06N3/0455

    CPC classification number: G06N3/0455

    Abstract: Provided are improved end-to-end self-supervised pre-training frameworks that leverage a combination of contrastive and masked modeling loss terms. In particular, the present disclosure provides framework that combines contrastive learning and masked modeling, where the former trains the model to discretize input data (e.g., continuous signals such as continuous speech signals) into a finite set of discriminative tokens, and the latter trains the model to learn contextualized representations via solving a masked prediction task consuming the discretized tokens. In contrast to certain existing masked modeling-based pre-training frameworks which rely on an iterative re-clustering and re-training process or other existing frameworks which concatenate two separately trained modules, the proposed framework can enable a model to be optimized in an end-to-end fashion by solving the two self-supervised tasks (the contrastive task and masked modeling) simultaneously.

    END-TO-END SPEECH WAVEFORM GENERATION THROUGH DATA DENSITY GRADIENT ESTIMATION
    68.
    发明公开
    END-TO-END SPEECH WAVEFORM GENERATION THROUGH DATA DENSITY GRADIENT ESTIMATION 审中-公开

    公开(公告)号：US20230252974A1

    公开(公告)日：2023-08-10

    申请号：US18010438

    申请日：2021-09-02

    Applicant: Google LLC

    Inventor： Byungha Chun ,  Mohammad Norouzi ,  Nanxin Chen ,  Ron J. Weiss ,  William Chan ,  Yu Zhang ,  Yonghui Wu

    IPC: G10L13/08 ,  G10L21/0208

    CPC classification number: G10L13/08 ,  G10L21/0208

    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for generating waveforms conditioned on phoneme sequences. In one aspect, a method comprises: obtaining a phoneme sequence; processing the phoneme sequence using an encoder neural network to generate a hidden representation of the phoneme sequence; generating, from the hidden representation, a conditioning input; initializing a current waveform output; and generating a final waveform output that defines an utterance of the phoneme sequence by a speaker by updating the current waveform output at each of a plurality of iterations, wherein each iteration corresponds to a respective noise level, and wherein the updating comprises, at each iteration: processing (i) the current waveform output and (ii) the conditioning input using a noise estimation neural network to generate a noise output; and updating the current waveform output using the noise output and the noise level for the iteration.

    MULTI-DIALECT AND MULTILINGUAL SPEECH RECOGNITION
    70.
    发明申请
    MULTI-DIALECT AND MULTILINGUAL SPEECH RECOGNITION 有权

    公开(公告)号：US20220130374A1

    公开(公告)日：2022-04-28

    申请号：US17572238

    申请日：2022-01-10

    Applicant: Google LLC

    Inventor： Zhifeng Chen ,  Bo Li ,  Eugene Weinstein ,  Yonghui Wu ,  Pedro J. Moreno Mengibar ,  Ron J. Weiss ,  Khe Chai Sim ,  Tara N. Sainath ,  Patrick An Phu Nguyen

    IPC: G10L15/00 ,  G10L15/16 ,  G10L15/07

    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer-readable media, for speech recognition using multi-dialect and multilingual models. In some implementations, audio data indicating audio characteristics of an utterance is received. Input features determined based on the audio data are provided to a speech recognition model that has been trained to output score indicating the likelihood of linguistic units for each of multiple different language or dialects. The speech recognition model can be one that has been trained using cluster adaptive training. Output that the speech recognition model generated in response to receiving the input features determined based on the audio data is received. A transcription of the utterance generated based on the output of the speech recognition model is provided.

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