Speech recognition method, apparatus and navigation system
First Claim
1. A speech recognition method in which a word is recognized from a user'"'"'s natural utterance, the speech recognition method comprising:
- capturing speech as a speech signal and extracting features from the speech signal;
selecting candidates of a subword among subwords of the word based on the extracted features and displaying the candidate subwords for the subword;
selecting candidates of a next subword following the subword based on the selected candidates of the subword and displaying the candidates of the next subword; and
determining whether the user has selected one of the candidates of the next subword and, if not, selecting candidates of subwords following the next subword based on the series of subwords that have been previously selected by the user and displaying the selected candidates of the next subword.
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Abstract
A speech recognition method and apparatus and a navigation system having the speech recognition apparatus are provided. The speech recognition method includes capturing speech as speech signal and extracting features from the speech signal, selecting candidates of a subword among subwords of the word based on the extracted features and displaying the candidate subwords for the subword, selecting candidates of a next subword following the subword based on the selected candidates of the subword and displaying the candidates of the next subword, and determining whether the user has selected one of the candidates of the next subword and, if not, selecting candidates of subwords following the next subword based on the series of subwords that have been previously selected by the user and displaying the selected candidates of the next subword.
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Citations
22 Claims
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1. A speech recognition method in which a word is recognized from a user'"'"'s natural utterance, the speech recognition method comprising:
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capturing speech as a speech signal and extracting features from the speech signal;
selecting candidates of a subword among subwords of the word based on the extracted features and displaying the candidate subwords for the subword;
selecting candidates of a next subword following the subword based on the selected candidates of the subword and displaying the candidates of the next subword; and
determining whether the user has selected one of the candidates of the next subword and, if not, selecting candidates of subwords following the next subword based on the series of subwords that have been previously selected by the user and displaying the selected candidates of the next subword. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A speech recognition apparatus that recognizes a word from a user'"'"'s natural utterance, the speech recognition apparatus comprising:
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a microphone to convert the user'"'"'s speech into an electrical signal;
a feature extraction module to extract features from the electrical speech signal;
a subword decoder to divide the word into a plurality of subwords based on the extracted features and select subword candidates for each of the subwords of the word;
a display module to display the subword candidates for each of the subwords of the word;
an input module to allow the user to select one of the subword candidates for each of the subwords of the word; and
a determination module to determine one of candidate words that matches the word based on a subword candidate or a series of subword candidates that have been selected by the user using the input module. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A navigation system comprising:
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a display device;
a speech recognition apparatus to capture speech as a speech signal from a user'"'"'s natural utterance, extract features from the speech signal, divide a word or word series corresponding to the speech signal into a plurality of subwords, select subword candidates for each of the subwords of the word, and recognize the name of a place designated by the word based on a subword or subword series selected by the user among the subword candidates;
a map database to store maps of different places; and
a navigation controller to fetch a map corresponding to the recognized place name received from the speech recognition apparatus from the map database and transmit the fetched map to the display device. - View Dependent Claims (15, 16)
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17. A storage for controlling a computer according to a speech recognition method in which a word is recognized from a user'"'"'s natural utterance, the speech recognition method comprising:
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capturing a speech as a speech signal and extracting features from the speech signal;
selecting candidates of a subword among subwords of the word based on the extracted features and displaying the candidate subwords for the subword;
selecting candidates of a next subword following the subword based on the selected candidates of the subword and displaying the candidates of the next subword; and
determining whether the user has selected one of the candidates of the next subword and, if not, selecting candidates of subwords following the next subword based on the series of subwords that have been previously selected by the user and displaying the selected candidates of the next subword. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification