Generation of synthetic speech
First Claim
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1. A method of training a subject to discriminate between first and second utterances, the method comprising the steps of:
- generating data representing a synthetic speech sound by extrapolation from or interpolation between said first and second utterances, said synthetic speech sound lying respectively outside or inside a range of variation defined by the first and second utterances;
reproducing the synthetic speech sound from the data; and
determining whether the subject is capable of discriminating between said synthetic speech sound and another test speech sound related to said first and second utterances.
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Abstract
There is disclosed a method of generating synthetic speech sound data relating to first and second utterances. Interpolation between or extrapolation from first and second sets of parameters encoding said utterances results in a third set of parameters used to synthesise the synthetic speech sound. Each set of parameters preferably includes separate source parameters and spectral parameters derived using linear prediction coding. Related methods of trailing and diagnosis, and related apparatus are also disclosed.
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Citations
29 Claims
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1. A method of training a subject to discriminate between first and second utterances, the method comprising the steps of:
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generating data representing a synthetic speech sound by extrapolation from or interpolation between said first and second utterances, said synthetic speech sound lying respectively outside or inside a range of variation defined by the first and second utterances;
reproducing the synthetic speech sound from the data; and
determining whether the subject is capable of discriminating between said synthetic speech sound and another test speech sound related to said first and second utterances. - View Dependent Claims (3, 4, 5, 17, 28)
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2. A method of testing a subject, comprising the steps of:
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generating data representing a synthetic speech sound by extrapolation from or interpolation between first and second utterances, said synthetic speech sound lying respectively outside or inside a range of variation defined by the first and second utterances;
reproducing the synthetic speech sound from the data; and
determining whether the subject is capable of discriminating between said synthetic speech sound and another test speech sound related to said first and second utterances.
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6. A method of generating data representing a synthetic speech sound related to first and second utterances, comprising the steps of:
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providing first and second sets of parameters encoding first and second recorded speech samples of the first and second utterances;
interpolating between or extrapolating from the first and second sets of parameters to form a third set of parameters; and
generating the synthetic speech sound data from the third set of parameters. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 29)
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18. Apparatus for generating data representing a synthetic speech sound related to first and second utterances, comprising:
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an input parameter memory arranged to receive and store first and second sets of parameters encoding first and second recorded speech samples of the first and second utterances;
a speech sound calculator arranged to interpolate between or extrapolate from the first and second sets of parameters to form a third set of parameters; and
a synthesiser arranged to generate the synthetic speech sound data from the third set of parameters. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. Apparatus for training a subject to discriminate between first and second utterances, comprising:
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a playback device for reproducing a synthetic speech sound from data representing the synthetic speech sound, generated by extrapolation from or interpolation between said first and second utterances, said synthetic speech sound respectively lying outside or within a range of variation defined by the first and second utterances;
an input device; and
logic for determining, from signals received from said input device, whether the subject is capable of discriminating between said synthetic speech sound and another test speech sound related to said first and second utterances. - View Dependent Claims (26, 27)
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Specification