System and method for pruning redundant units in a speech synthesis process
AssigneeNuance Communications, Inc.
InventorsHeng Lu, Xu Shao, Wei Zhang, Wenhui Lei, Andrew Breen
Life of this patent
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Abstract
A system and method for concatenative speech synthesis is provided. Embodiments may include accessing, using one or more computing devices, a plurality of speech synthesis units from a speech database and determining a similarity between the plurality of speech synthesis units. Embodiments may further include retrieving two or more speech synthesis units having the similarity and pruning at least one of the two or more speech synthesis units based upon, at least in part, the similarity.
Claims14
A computer-implemented method for concatenative speech synthesis comprising:
- accessing, using one or more computing devices, a plurality of speech synthesis units from a speech database;
- determining a similarity between the plurality of speech synthesis units, wherein determining the similarity is based upon, at least in part, a similarity factor;
- retrieving two or more speech synthesis units having the similarity;
- and
- pruning at least one of the two or more speech synthesis units based upon, at least in part, the similarity, wherein pruning is based upon, at least in part, a delta unit appearance frequency “DUAF” technique and wherein the DUAF is based upon, at least in part, a change in a unit appearance frequency and a change of the similarity factor.
A non-transitory computer-readable storage medium having stored thereon instructions, which when executed by a processor result in one or more concatenative speech synthesis operations, the operations comprising:
- accessing, using one or more computing devices, a plurality of speech synthesis units from a speech database;
- determining a similarity between the plurality of speech synthesis units, wherein determining the similarity is based upon, at least in part, a similarity factor;
- retrieving two or more speech synthesis units having the similarity;
- and
- pruning at least one of the two or more speech synthesis units based upon, at least in part, the similarity, wherein pruning is based upon, at least in part, a delta unit appearance frequency “DUAF” technique and wherein the DUAF is based upon, at least in part, a change in a unit appearance frequency and a change of the similarity factor.
A system configured to perform concatenative speech synthesis comprising:
- one or more processors configured to access a plurality of speech synthesis units from a speech database and determine a similarity between the plurality of speech synthesis units, wherein determining the similarity is based upon, at least in part, a similarity factor, the one or more processors further configured to retrieve two or more speech synthesis units having the similarity, the one or more processors further configured to prune at least one of the two or more speech synthesis units based upon, at least in part, the similarity, wherein pruning is based upon, at least in part, a delta unit appearance frequency “DUAF” technique and wherein the DUAF is based upon, at least in part, a change in a unit appearance frequency and a change of the similarity factor.
Dependencies are inferred from the claim text.