PITCH PATTERN GENERATION METHOD AND APPARATUS THEREOF
First Claim
1. A pitch pattern generation method which connects pitch patterns in respective prosody control units in a text to be a target for speech synthesis to generate a pitch pattern corresponding to the text, comprising:
- a first generating step of generating first pitch pattern reflecting an emphasis degree with respect to respective prosody control unit in the text based on emphasis degree information indicating the emphasis degree in the respective prosody control units and language attribute information in speech to be synthesized;
a method deciding step of deciding at least (1) a parameter relating to given smoothing processing or (2) a modification method at a connection portion relating to given smoothing processing, for smoothing connection portions in at least one of previous and next connection portions between the respective first pitch patterns and other first pitch patterns based on the emphasis degree information; and
a second generating step of modifying the connection portions of the first pitch patterns based on the modification method to generate a second pitch pattern corresponding to the text.
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Abstract
The prosody control unit pattern generation module generates pitch patterns in respective prosody control units based on language attribute information, the phoneme duration and emphasis degree information, the modification method decision module decides a modification method by smoothing processing with respect to the pitch pattern in a connection portion between the prosody control unit and at least one of previous and next prosody control units based on at least emphasis degree information to generate modification method information, and the pattern connection module modifies pitch patterns generated in respective prosody control units by smoothing processing according to the modification method information and connects them to generate a sentence pitch pattern corresponding to a text to be a target for speech synthesis.
32 Citations
18 Claims
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1. A pitch pattern generation method which connects pitch patterns in respective prosody control units in a text to be a target for speech synthesis to generate a pitch pattern corresponding to the text, comprising:
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a first generating step of generating first pitch pattern reflecting an emphasis degree with respect to respective prosody control unit in the text based on emphasis degree information indicating the emphasis degree in the respective prosody control units and language attribute information in speech to be synthesized; a method deciding step of deciding at least (1) a parameter relating to given smoothing processing or (2) a modification method at a connection portion relating to given smoothing processing, for smoothing connection portions in at least one of previous and next connection portions between the respective first pitch patterns and other first pitch patterns based on the emphasis degree information; and a second generating step of modifying the connection portions of the first pitch patterns based on the modification method to generate a second pitch pattern corresponding to the text. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A pitch pattern generation apparatus which connects pitch patterns in respective prosody control units in a text to be a target for speech synthesis to generate a pitch pattern corresponding to the text, comprising:
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a first generation module configured to generate first pitch pattern reflecting an emphasis degree with respect to respective prosody control unit in the text based on emphasis degree information indicating the emphasis degree in the respective prosody control units and language attribute information in speech to be synthesized; a method deciding module configured to decide at least (1) a parameter relating to given smoothing processing or (2) a modification method at a connection portion relating to given smoothing processing, for smoothing connection portions in at least one of previous and next connection portions between the respective first pitch patterns and other first pitch patterns based on the emphasis degree information; and a second generation module configured to modify the connection portions of the first pitch patterns based on the modification method to generate a second pitch pattern corresponding to the text. - View Dependent Claims (12, 13, 14)
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15. Recording media storing a pitch pattern generation program which connects pitch patterns in respective prosody control units in a text to be a target for speech synthesis to generate a pitch pattern corresponding to the text, realizing the following functions by a computer:
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a first generation function of generating first pitch pattern reflecting an emphasis degree with respect to respective prosody control unit in the text based on emphasis degree information indicating the emphasis degree in the respective prosody control units and language attribute information in speech to be synthesized; a method deciding function of deciding at least (1) a parameter relating to given smoothing processing or (2) a modification method at a connection portion relating to given smoothing processing, for smoothing connection portions in at least one of previous and next connection portions between the respective first pitch patterns and other first pitch patterns based on the emphasis degree information; and a second generation function of modifying the connection portions of the first pitch patterns based on the modification method to generate a second pitch pattern corresponding to the text. - View Dependent Claims (16, 17, 18)
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Specification