APPARATUS, METHOD, AND RECORDING MEDIUM FOR CLUSTERING PHONEME MODELS
First Claim
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1. An apparatus for clustering phoneme models, comprising:
- an input unit configured to input a plurality of context-dependent phoneme models each including a phoneme context indicating a class of an adjacent phoneme and indicating a phoneme model having different acoustic characteristic of a central phoneme according to the phoneme context;
a first storage unit configured to store therein a classification condition of the phoneme context set according to the acoustic characteristic;
a first clustering unit configured to generate a cluster including the context-dependent phoneme models having a common central phoneme and common acoustic characteristic by performing a clustering for each of the context-dependent phoneme models having a common central phoneme according to the classification condition;
a first setting unit configured to set a conditional response indicating a response to each classification condition according to the acoustic characteristic with respect to each cluster according to the acoustic characteristic of the context-dependent phoneme model included in the cluster;
a second clustering unit configured to generate a set of clusters by performing a clustering with respect to a plurality of clusters according to the conditional response corresponding to the classification condition; and
an output unit configured to output the context-dependent phoneme models included in the set of clusters.
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Abstract
A phoneme model clustering apparatus stores a classification condition of a phoneme context, generates a cluster by performing a clustering of context-dependent phoneme models having different acoustic characteristics of central phoneme for each model having a common central phoneme according to the classification condition, sets a conditional response for each cluster according to acoustic characteristics of context-dependent phoneme models included in the cluster, generates a set of clusters by performing a clustering on clusters according to the conditional response, and outputs the context-dependent phoneme models included in the set of clusters.
15 Citations
20 Claims
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1. An apparatus for clustering phoneme models, comprising:
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an input unit configured to input a plurality of context-dependent phoneme models each including a phoneme context indicating a class of an adjacent phoneme and indicating a phoneme model having different acoustic characteristic of a central phoneme according to the phoneme context; a first storage unit configured to store therein a classification condition of the phoneme context set according to the acoustic characteristic; a first clustering unit configured to generate a cluster including the context-dependent phoneme models having a common central phoneme and common acoustic characteristic by performing a clustering for each of the context-dependent phoneme models having a common central phoneme according to the classification condition; a first setting unit configured to set a conditional response indicating a response to each classification condition according to the acoustic characteristic with respect to each cluster according to the acoustic characteristic of the context-dependent phoneme model included in the cluster; a second clustering unit configured to generate a set of clusters by performing a clustering with respect to a plurality of clusters according to the conditional response corresponding to the classification condition; and an output unit configured to output the context-dependent phoneme models included in the set of clusters. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of clustering phoneme models for a phoneme model clustering apparatus including a first storage unit that stores therein a classification condition of a phoneme context set according to acoustic characteristic, the method comprising:
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inputting a plurality of context-dependent phoneme models each including the phoneme context and indicating a phoneme model having different acoustic characteristic of a central phoneme according to the phoneme context; first clustering including performing a clustering for each of the context-dependent phoneme models having a common central phoneme according to the classification condition, and generating a cluster including the context-dependent phoneme models having a common central phoneme and common acoustic characteristic; first setting including setting a conditional response indicating a response to each classification condition according to the acoustic characteristic with respect to each cluster according to the acoustic characteristic of the context-dependent phoneme model included in the cluster; second clustering including performing a clustering with respect to a plurality of clusters according to the conditional response corresponding to the classification condition, and generating a set of clusters; and outputting the context-dependent phoneme models included in the set of clusters. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A computer-readable recording medium that stores therein a computer program for clustering phoneme models for a phoneme model clustering apparatus including a first storage unit that stores therein a classification condition of a phoneme context set according to acoustic characteristic, the computer program when executed causing a computer to execute:
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inputting a plurality of context-dependent phoneme models each including the phoneme context and indicating a phoneme model having different acoustic characteristic of a central phoneme according to the phoneme context; first clustering including performing a clustering for each of the context-dependent phoneme models having a common central phoneme according to the classification condition, and generating a cluster including the context-dependent phoneme models having a common central phoneme and common acoustic characteristic; first setting including setting a conditional response indicating a response to each classification condition according to the acoustic characteristic with respect to each cluster according to the acoustic characteristic of the context-dependent phoneme model included in the cluster; second clustering including performing a clustering with respect to a plurality of clusters according to the conditional response corresponding to the classification condition, and generating a set of clusters; and outputting the context-dependent phoneme models included in the set of clusters. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification