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Speech recognition device, speech recognition system, and speech recognition method

A technology of speech recognition and speech, which is applied in speech recognition, speech analysis, character and pattern recognition, etc., and can solve problems such as misrecognition of spoken speech by speech recognition devices

Inactive Publication Date: 2021-05-18
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the vehicle, various noises such as conversations between passengers, vehicle running noise, or navigation voices from in-vehicle equipment may occur, so the voice recognition device may misrecognize the spoken voice due to the noise.

Method used

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  • Speech recognition device, speech recognition system, and speech recognition method
  • Speech recognition device, speech recognition system, and speech recognition method
  • Speech recognition device, speech recognition system, and speech recognition method

Examples

Experimental program
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Embodiment approach 1

[0040] figure 1 It is a block diagram showing an example of the configuration of the information equipment 10 including the speech recognition device 20 according to the first embodiment. The information device 10 is, for example, a navigation system for a vehicle, an integrated cab system including an instrument display for a driver, a personal computer (PC), a tablet PC, or a portable information terminal such as a smartphone. The information equipment 10 includes a sound collection device 11 and a speech recognition device 20 .

[0041] In addition, the following description will be given by taking the speech recognition device 20 for recognizing Japanese as an example, but the language to be recognized by the speech recognition device 20 is not limited to Japanese.

[0042] The speech recognition device 20 includes a speech signal processing unit 21 , a speech recognition unit 22 , a score utilization determination unit 23 , a dialogue management database 24 (hereinafter ...

Embodiment approach 2

[0078] Figure 7 This is a block diagram showing a configuration example of the information equipment 10 including the speech recognition device 20 according to the second embodiment. The information device 10 according to the second embodiment is a pair of figure 1 The information device 10 of the illustrated embodiment 1 has a configuration in which a camera 12 is added. In addition, the speech recognition device 20 according to Embodiment 2 is a pair of figure 1 The voice recognition device 20 of the illustrated embodiment 1 has a configuration in which an image analysis unit 26 and an image use determination unit 27 are added. for Figure 7 neutral figure 1 The same or equivalent parts are marked with the same reference numerals and the description is omitted.

[0079] The camera 12 photographs the interior of the vehicle. The camera 12 is constituted by, for example, an infrared camera or a visible light camera, and has at least a viewing angle that can capture a ra...

Embodiment approach 3

[0098] Figure 13 It is a block diagram showing a configuration example of the information equipment 10 including the speech recognition device 20 according to the third embodiment. The speech recognition device 20 according to the third embodiment is a figure 1 The voice recognition device 20 of the illustrated embodiment 1 is configured by adding the intention understanding unit 30 . for Figure 13 neutral figure 1 The same or equivalent parts are marked with the same reference numerals and the description is omitted.

[0099] The intent understanding unit 30 executes an intent understanding process for each passenger's voice recognition result output from the voice recognition unit 22 . The intention understanding unit 30 outputs the intention understanding result of each passenger and the intention understanding score indicating the reliability of the schematic understanding result to the score utilization determination unit 23C. In addition, the intention understandi...

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Abstract

A speech signal processing unit (21) separates the uttered speech of a plurality of passengers sitting in a plurality of seats specified for speech recognition in a vehicle into passenger-specific uttered speech. A speech recognition unit (22) recognizes the passenger-specific uttered speech separated by the speech signal processing unit (21) while calculating speech recognition scores. A score use determination unit (23) uses the passenger-specific speech recognition scores to determine which speech recognition result corresponding to a passenger is to be adopted among passenger-specific speech recognition results.

Description

technical field [0001] The present invention relates to a speech recognition device, a speech recognition system and a speech recognition method. Background technique [0002] Conventionally, a voice recognition apparatus for operating information equipment in a vehicle by voice has been developed. Hereinafter, the seat in the vehicle to be the subject of voice recognition is referred to as a "seat subject to voice recognition". In addition, among the passengers seated in the voice recognition target seat, the passenger who speaks the voice for the operation is referred to as a "speaker". In addition, the voice of the speaker facing the voice recognition device is referred to as "speech voice". [0003] Since various noises such as conversations between passengers, vehicle running noise, and navigation voices from in-vehicle devices are generated in the vehicle, the voice recognition device may erroneously recognize the spoken voice due to the noise. Therefore, the voice ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L15/28
CPCG10L15/22G10L25/78G10L21/0272G10L2015/226G10L15/24G06V40/171G10L15/02G10L15/25
Inventor 马场直哉小路悠介
Owner MITSUBISHI ELECTRIC CORP
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