VOICE RECOGNITION SYSTEM AND VOICE RECOGNITION DEVICE

• US 20160275950A1
• Filed: 11/20/2013
• Published: 09/22/2016
• Est. Priority Date: 02/25/2013
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: OGAWA, Isamu, NARITA, Tomohiro, HANAZAWA, Toshiyuki
• Granted Patent: US 9,761,228 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G10L 15/10 using distance or distortion measures between unknown speech and reference templates
• CPC Class Codes: G10L 15/183 using context dependencies, e.g. language models
• CPC Class Codes: G10L 15/30 Distributed recognition, e.g. in client-server systems, for mobile phones or network applications
• CPC Class Codes: G10L 15/32 Multiple recognisers used in sequence or in parallel; Score combination systems therefor, e.g. voting systems
• CPC Class Codes: G10L 15/34 Adaptation of a single recogniser for parallel processing, e.g. by use of multiple processors or cloud computing
• CPC Class Codes: G10L 25/51 for comparison or discrimination

Abstract

There are provided a recognition result candidate comparator 205 that compares a plurality of server-side voice recognition result candidates received by a receiver 204, to detect texts having a difference, and a recognition result integrator 206 that integrates a client-side voice recognition result candidate and a server-side voice recognition result candidate on the basis of the client-side voice recognition result candidate, the server-side voice recognition result candidate, and a detection result provided by the recognition result candidate comparator 205, to decide a voice recognition result.

Claims

1. A voice recognition system including a server device and a voice recognition device on a client side, which is connected to said server device, wherein

said server device comprises:

a server-side receiver that receives voice data inputted thereto from said voice recognition device;

a server-side voice recognizer that performs voice recognition on the voice data received by said server-side receiver, and generates a server-side voice recognition result candidate; and

a server-side transmitter that transmits said server-side voice recognition result candidate generated by said server-side voice recognizer to said voice recognition device, and wherein

said voice recognition device comprises;

a voice inputter that converts an uttered voice inputted thereto into said voice data;

a client-side voice recognizer that performs voice recognition on said voice data converted by said voice inputter, and generates a client-side voice recognition result candidate;

a client-side transmitter that transmits said voice data converted by said voice inputter to said server device;

a client-side receiver that receives said server-side voice recognition result candidate transmitted by said server-side transmitter;

a recognition result candidate comparator that compares a plurality of said server-side voice recognition result candidates received by said client-side receiver, to detect texts having a difference;

a recognition result integrator that integrates said client-side voice recognition result candidate and said server-side voice recognition result candidate on a basis of said client-side voice recognition result candidate, said server-side voice recognition result candidate, and a detection result provided by said recognition result candidate comparator, to decide a voice recognition result; and

an outputter that outputs the voice recognition result decided by said recognition result integrator.

2. The voice recognition system according to claim 1, wherein said voice recognition device includes an input rule determinator that compares said client-side voice recognition result with utterance rule patterns in each of which a predetermined key word is brought into correspondence with an utterance rule of said key word, and determines an utterance rule of said voice data, and wherein said recognition result integrator integrates said client-side voice recognition result candidate and said server-side voice recognition result candidate on a basis of said client-side voice recognition result candidate, said server-side voice recognition result candidate, the detection result provided by said recognition result candidate comparator, and the utterance rule determined by said input rule determinator.

3. The voice recognition system according to claim 2, wherein said voice recognition device includes an input voice/recognition result storage that stores the voice data converted by said voice inputter and the voice recognition result decided by said recognition result integrator while bringing them into correspondence with each other, and a recognition result candidate corrector that acquires a server-side voice recognition result candidate corresponding to voice data stored in said input voice/recognition result storage and generates a database when the device is started, and that also compares the generated database with the server-side voice recognition result candidate received by said client-side receiver, and wherein said recognition result integrator integrates said client-side voice recognition result candidate and said server-side voice recognition result candidate on a basis of a comparison result provided by said recognition result candidate corrector.

4. The voice recognition system according to claim 2, wherein said recognition result candidate comparator compares a plurality of said server-side voice recognition result candidates received by said client-side receiver to detect a plurality of texts having a difference, and determines whether the plurality of detected texts show same contents, and said recognition result integrator replaces said detected text with a proper noun based on said server-side voice recognition result when said recognition result candidate comparator determines that the plurality of texts detected thereby show same contents.

5. A voice recognition device on a client side which is connected to a server device having a voice recognition function, said voice recognition device comprising:

a voice inputter that converts an uttered voice inputted thereto into voice data;

a client-side voice recognizer that performs voice recognition on said voice data converted by said voice inputter, and generates a client-side voice recognition result candidate;

a client-side transmitter that transmits said voice data converted by said voice inputter to said server device;

a client-side receiver that receives a server-side voice recognition result candidate generated by said server device on a basis of said voice data transmitted by said client-side transmitter;

a recognition result candidate comparator that compares a plurality of said server-side voice recognition result candidates received by said client-side receiver, to detect texts having a difference;

a recognition result integrator that integrates said client-side voice recognition result candidate and said server-side voice recognition result candidate on a basis of said client-side voice recognition result candidate, said server-side voice recognition result candidate, and a detection result provided by said recognition result candidate comparator, to decide a voice recognition result; and

an outputter that outputs the voice recognition result decided by said recognition result integrator.