Speech synthesis using concatenation of speech waveforms
First Claim
1. A method of synthesizing of a speech signal, the speech signal having at least a first speech unit and a second speech unit, the method comprising the steps of:
- providing a first speech unit signal, the first speech unit signal having an end interval,providing a second speech unit signal, the second speech unit signal having a front interval,appending of at least some periods of the end interval in inverted order at the end of the first speech unit signal to provide a fade-out interval,appending of at least some periods of the front interval in inverted order at the beginning of the second speech unit signal to provide a fade-in interval,superposing of the end and fade-in intervals and of the fade-out and front intervals.
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Abstract
A method of synthesizing a speech signal by providing a first speech unit signal having an end interval and a second speech unit signal having a front interval, wherein at least some of the periods of the end interval are appended in inverted order at the end of the first speech unit signal in order to provide a fade-out interval, and at least some of the periods of the front interval are appended in inverted order at the beginning of the second speech unit signal to provide a fade-in interval. An overlap and add operation is performed on the end and fade-in intervals and the fade-out and front intervals.
4 Citations
14 Claims
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1. A method of synthesizing of a speech signal, the speech signal having at least a first speech unit and a second speech unit, the method comprising the steps of:
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providing a first speech unit signal, the first speech unit signal having an end interval, providing a second speech unit signal, the second speech unit signal having a front interval, appending of at least some periods of the end interval in inverted order at the end of the first speech unit signal to provide a fade-out interval, appending of at least some periods of the front interval in inverted order at the beginning of the second speech unit signal to provide a fade-in interval, superposing of the end and fade-in intervals and of the fade-out and front intervals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. Computer digital storage medium, comprising program means for synthesizing of a speech signal, the speech signal having at least a first speech unit and a second speech unit, the program means being adapted to perform the steps of:
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providing a first speech unit signal, the first speech unit signal having an end interval, providing a second speech unit signal, the second speech unit signal having a front interval, appending of at least some periods of the end interval in inverted order at the end of the first speech unit signal to provide a fade-out interval, appending of at least some periods of the front interval in inverted order at the beginning of the second speech unit signal to provide a fade-in interval, superposing of the end and fade-in intervals and of the fade-out and front intervals.
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14. Computer system, in particular text-to-speech system, for synthesizing of a speech signal, the speech signal having at least a first speech unit and a second speech unit, the computer system comprising:
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means (402) for storing of a first speech unit signal, the first speech unit signal having an end interval, and for storing of a second speech unit signal, the second speech unit signal having a front interval, means (404) for appending of at least some periods of the end interval (202;
300) in inverted order at the end of the first speech unit signal to provide a fade-out interval (204;
302),means (404) for appending of at least some periods of the front interval (208;
306) in inverted order at the beginning of the second speech unit signal to provide a fade-in interval (308),means (410) for superposing of the end and fade-in intervals and of the fade-out and front intervals.
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Specification