Speech recognition device, speech recognition method, and computer program product
AssigneeKabushiki Kaisha Toshiba
InventorsMasami AKAMINE, Remco Teunen
Life of this patent
Estimating the term…
Abstract
A speech recognition device includes an extracting unit that analyzes an input signal and extracts a feature to be used for speech recognition from the input signal; a storing unit configured to store therein an acoustic model that is a stochastic model for estimating what type of a phoneme is included in the feature; a speech-recognition unit that performs speech recognition on the input signal based on the feature and determines a word having maximum likelihood from the acoustic model; and an optimizing unit that dynamically self-optimizes parameters of the feature and the acoustic model depending on at least one of the input signal and a state of the speech recognition performed by the speech-recognition unit.
Claims12
A speech recognition device comprising:
- a feature extracting unit that analyzes an input signal and extracts a feature to be used for speech recognition from the input signal;
- an acoustic-model storing unit configured to store therein an acoustic model that is a stochastic model for estimating what type of a phoneme is included in the feature;
- a speech-recognition unit that performs speech recognition on the input signal based on the feature and determines a word having maximum likelihood from the acoustic model;
- and
- an optimizing unit that dynamically self-optimizes parameters of the feature and the acoustic model depending on at least one of the input signal and a state of the speech recognition performed by the speech-recognition unit.
A computer-readable recording medium that stores therein a computer program product that causes a computer to execute a plurality of commands for speech recognition that is stored in the computer program product, the computer program product causing the computer to execute:
- analyzing an input signal and extracting a feature to be used for speech recognition from the input signal;
- performing speech recognition of the input signal based on the feature and determining a word having maximum likelihood from the acoustic model that is a stochastic model for estimating what type of a phoneme is included in the feature;
- and
- dynamically self-optimizing parameters of the feature and the acoustic model depending on the input signal or a state of the speech recognition performed by the performing.
A speech recognition method comprising:
- analyzing an input signal and extracting a feature to be used for speech recognition from the input signal;
- performing speech recognition of the input signal based on the feature and determining a word having maximum likelihood from the acoustic model that is a stochastic model for estimating what type of a phoneme is included in the feature;
- and
- dynamically self-optimizing parameters of the feature and the acoustic model depending on the input signal or a state of the speech recognition performed by the performing.
Dependencies are inferred from the claim text.