Speech synthesis dictionary delivery device, speech synthesis system, and program storage medium

A speech synthesis system that delivers a synthetic speech to a terminal via a network, comprising:

• an input output interface (I/F) configured to receive identification information of a specified speaker transmitted from the terminal via the network;
• a storage device for a speech synthesis dictionary database configured to:
• store a first dictionaries, each of which includes an acoustic model of a speaker and is associated with identification information of the speaker;
• store a second dictionary that includes a versatile acoustic model generated using voice data of a plurality of speakers;
• and
• store parameter sets of the speakers to be used with the second dictionary and is associated with identification information of the speakers;
• a hardware processor configured to:
• select a first dictionary or a parameter set to be loaded onto the storage device based on a server load of the speech synthesis system;
• and
• synthesize a speech using the first dictionary or the parameter set with the second dictionary that is selected by the hardware processor,
• wherein the input output interface is further configured to deliver the speech synthesized by the hardware processor to the terminal via the network.

A non-transitory computer-readable storage medium storing instructions that, when executed by one or more processors of a device having a speech synthesis dictionary delivery program stored therein, cause the device to:

• store first dictionaries each of which includes an acoustic model of a speaker and is associated with identification information of the speaker;
• store a second dictionary including a versatile acoustic model generated using voice data of a plurality of speakers;
• store parameter sets of the speakers to be used with the second dictionary in association with identification information of the speakers;
• determine which of a first dictionary and the second dictionary should be used for a specified speaker based on a communication state of a network connected to a terminal;
• receive the identification information of the specified speaker transmitted from the terminal via the network;
• and
• deliver the first dictionary, or at least one of the second dictionary and a parameter set to the terminal via the network based on the received identification information of the specified speaker and a determination result by the determining.

A speech synthesis device that provides a synthetic speech to a terminal via the network, comprising:

• a storage unit for a speech synthesis dictionary database configured to:
• store first dictionaries each of which includes an acoustic model of a speaker and is associated with identification information of the speaker;
• store a second dictionary having a versatile acoustic model that is generated using voice data of a plurality of speakers;
• and
• store parameter sets of the speakers to be used with the second dictionary in association with identification information of the speakers;
• a condition determination unit configured to determine which of a first dictionary and the second dictionary should be used for a specified speaker based on a communication state of the network;
• and
• a transceiving unit configured to:
• receive identification information of the specified speaker transmitted from the terminal via the network;
• and
• deliver the first dictionary or at least one of the second dictionary and a parameter set of the second dictionary to the terminal via the network based on the received identification information of the specified speaker and a result of the determination by the condition determination unit.