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Speech synthesis device and method

A sound synthesis and sound technology, applied in speech synthesis, speech analysis, instruments, etc., can solve the problems of sound quality degradation, inability to continuously change sound quality, limited number of sound unit databases, etc.

Inactive Publication Date: 2007-04-25
PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that when the synthesized sound is generated by the waveform synthesis unit 6, the sound quality is remarkably degraded.
However, the number of sound unit databases is limited
Therefore, the sound quality transformation forms a discrete state, and the sound quality cannot be continuously changed.

Method used

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  • Speech synthesis device and method

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no. 1 Embodiment approach

[0042] FIG. 1 is a configuration diagram of a voice quality variable speech synthesis device according to a first embodiment of the present invention.

[0043] The voice quality variable voice synthesis device 100 is a device for synthesizing voices with the voice quality desired by the editor, and has: a text analysis unit 101, a target voice unit information generation unit 102, a voice unit database 103, a voice unit selection unit 104, and voice quality designation. unit 105 , voice quality conversion unit 106 , waveform generation unit 107 , distortion determination unit 108 , and target sound unit information modification unit 109 .

[0044] The text analysis unit 101 linguistically analyzes text input from the outside, and outputs morpheme information and phoneme information. The target sound unit information generation unit 102 generates sound unit information such as phonological environment, fundamental frequency, duration, and power based on the language information...

no. 2 Embodiment approach

[0138] Fig. 7 is a configuration diagram of a voice quality variable speech synthesis device according to a second embodiment of the present invention. In FIG. 7 , the same reference numerals are used for the same components as in FIG. 1 , and descriptions thereof are omitted.

[0139] The tone quality variable sound synthesis apparatus 200 shown in FIG. 7 is different from the tone quality variable sound synthesis apparatus 100 shown in FIG.

[0140] The sound element database 201 is a storage section storing sound elements used for synthesizing the neutral sound quality in the case where the sound quality specifying section 105 does not specify any sound quality. The voice quality sound unit database 202 is different from the first embodiment in that it is configured to store voice units having a variety of voice quality that can be synthesized with the voice quality designated by the voice quality specifying unit 105 .

[0141] In this embodiment, the selection of the init...

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Abstract

There is provided a speech synthesis device for creating a synthesized speech without significant lowering of voice quality. The speech synthesis device includes: a target speech piece information creation unit (102); a speech piece database (103); a speech piece selection unit (104); a voice quality specification unit (105); a voice quality conversion unit (106); a distortion judgment unit (108); and a target speech piece information correction unit (109). When a speech piece converted by the voice quality conversion unit (106) is judged to be distorted by the distortion judgment unit (108), the target speech piece information correction unit (109) converts the speech piece information created by the target speech piece information creation unit (102) into the speech piece information of the voice quality after the conversion and the speech piece selection unit (104) reselects a speech piece. Thus, without deteriorating the voice quality of the synthesized speech, it is possible to create a synthesized speech of the voice quality specified by the voice quality specification unit (105).

Description

technical field [0001] The present invention relates to a voice synthesis device, and more particularly, to a voice synthesis device capable of reproducing a voice quality designated by an editor and continuously changing the voice quality when the voice quality is continuously changed. Background technique [0002] In the past, as a speech synthesis system capable of synthesizing speech and changing the sound quality of the synthesized speech, a system for converting the sound quality to match the sound quality input to the sound unit selected by the sound unit selection unit has been proposed (for example, see Patent Document 1). [0003] FIG. 9 is a configuration diagram of a conventional voice quality variable speech synthesis device described in Patent Document 1. FIG. A conventional voice quality variable speech synthesis device includes a text input unit 1 , a voice quality conversion parameter input unit 2 , a voice unit storage unit 3 , a voice unit selection unit 4...

Claims

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Application Information

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IPC IPC(8): G10L13/08G01L21/04G10L13/06G10L13/07G10L13/10G10L21/003G10L21/007
CPCG10L2021/0135G10L13/033G10L13/06
Inventor 广濑良文
Owner PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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