VOICE RECOGNITION APPARATUS, VOICE RECOGNITION METHOD AND RECORDING MEDIUM
First Claim
1. A voice recognition apparatus comprising:
- an extraction unit extracting a feature amount from a voice signal;
a word dictionary storing a plurality of recognition words;
a reject word generation unit storing reject words in the word dictionary in association with the recognition words; and
a collation unit calculating a degree of similarity between the voice signal and each of the recognition words and reject words stored in the word dictionary by using the feature amount extracted by the extraction unit, determining whether or not a word having a high calculated degree of similarity corresponds to a reject word, when the word is determined as the reject word, excluding the recognition word stored in the word dictionary in association with the reject word from a result of recognition, and outputting a recognition word having a high calculated degree of similarity as a result of recognition.
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Abstract
A voice recognition apparatus includes an extraction unit extracting a feature amount from a voice signal, a word dictionary storing a plurality of recognition words; a reject word generation unit storing reject words in the word dictionary in association with the recognition words and a collation unit calculating a degree of similarity between the voice signal and each of the recognition words and reject words stored in the word dictionary by using the feature amount extracted by the extraction unit, determining whether or not a word having a high calculated degree of similarity corresponds to a reject word, when the word is determined as the reject word, excluding the recognition word stored in the word dictionary in association with the reject word from a result of recognition, and outputting a recognition word having a high calculated degree of similarity as a result of recognition.
31 Citations
9 Claims
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1. A voice recognition apparatus comprising:
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an extraction unit extracting a feature amount from a voice signal; a word dictionary storing a plurality of recognition words; a reject word generation unit storing reject words in the word dictionary in association with the recognition words; and a collation unit calculating a degree of similarity between the voice signal and each of the recognition words and reject words stored in the word dictionary by using the feature amount extracted by the extraction unit, determining whether or not a word having a high calculated degree of similarity corresponds to a reject word, when the word is determined as the reject word, excluding the recognition word stored in the word dictionary in association with the reject word from a result of recognition, and outputting a recognition word having a high calculated degree of similarity as a result of recognition. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A voice recognition apparatus comprising:
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an extraction unit extracting a feature amount from a voice signal, and storing the feature amount in a storage unit; a word dictionary storing a plurality of recognition words; a reject word generation unit storing reject words in the word dictionary in association with the recognition words; and a collation unit calculating a degree of similarity between the voice signal and each of the recognition words and reject words stored in the word dictionary by using the feature amount stored in the storage unit by the extraction unit, determining whether or not a word having a high calculated degree of similarity corresponds to a reject word, when the word is determined as the reject word, excluding the recognition word stored in the word dictionary in association with the reject word from the result of recognition, and outputting a recognition word having a high calculated degree of similarity as a result of recognition.
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8. A voice recognition method allowing a voice recognition apparatus including a word dictionary that stores a plurality of recognition words and reject words to output a recognition result based on a feature amount extracted from a voice signal, said voice recognition method comprising:
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calculating a degree of similarity between the voice signal and each of recognition words and reject words stored in the word dictionary by using the extracted feature amount; determining whether or not a word having a high calculated degree of similarity corresponds to a reject word; when the word is determined as the reject word, excluding the recognition word stored in the word dictionary in association with the reject word from a result of recognition.
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9. A computer-readable recording medium storing a computer program comprising:
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causing a computer to extract a feature amount from a voice signal; causing the computer to calculate a degree of similarity between the voice signal and each of recognition words and reject words stored in a word dictionary by using the extracted feature amount; causing the computer to determine whether or not a word having a high calculated degree of similarity corresponds to a reject word; when the word is determined as the reject word, causing the computer to exclude the recognition word stored in the word dictionary in association with the reject word from a result of recognition.
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Specification