Kabushiki Kaisha Toshiba

Haitian Xu

Kean Kheong Chin

Mark John Francis Gales

Speech processing system and method

A speech recognition method and system, includes receiving in a first noise environment a speech input having a sequence of observations; determining a likelihood of a sequence of words arising from the sequence of observations using an acoustic model trained to recognize speech in a second noise environment, the model having a plurality of model parameters relating to the probability distribution of a word or part thereof being related to an observation; and adapting the model trained in the second environment to that of the first environment.

Speech recognition system and method using vector taylor series joint uncertainty decoding

A speech recognition method includes receiving a speech input signal in a first noise environment which includes a sequence of observations, determining the likelihood of a sequence of words arising from the sequence of observations using an acoustic model, adapting the model trained in a second noise environment to that of the first environment, wherein adapting the model trained in the second environment to that of the first environment includes using second order or higher order Taylor expansion coefficients derived for a group of probability distributions and the same expansion coefficient is used for the whole group.

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Cambridge, United Kingdom

Haitian Xu