Speech recognition device, speech recognition method, and program

A technology of speech recognition and recognition results, which is applied in speech recognition, speech analysis, instruments, etc., and can solve problems such as inability to distinguish between speech within a task and speech outside a task

Inactive Publication Date: 2011-05-25
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0036] (2) The echo channel that does not correspond to the sound source
Can distinguish speech signals from other signals, but cannot distinguish on-task speech from off-task speech

Method used

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

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0084] Details of a speech recognition device, a speech recognition method, and a program according to embodiments of the present invention will be described below with reference to the accompanying drawings. It will be explained according to the following items.

[0085] 1. An example of the overall structure of the speech recognition device according to an embodiment of the present invention and an overview of processing

[0086] 2. Specific examples of the detailed structure and processing of the sound source separation unit

[0087] 3. Specific examples of the detailed structure and processing of the speech recognition unit

[0088] 4. Specific examples of the detailed structure and processing of the channel selection unit

[0089] 5. Sequence of processing performed by speech recognition means

[0090] 1. An example of the overall structure of the speech recognition device and an overview of processing

[0091] First, refer to image 3 An overview of the overall stru...

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PUM

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Abstract

The present invention relates to a speech recognition device, a speech recognition method, and a program. The speech recognition device includes a sound source separation unit configured to separate a mixed signal of outputs of a plurality of sound sources into signals corresponding to individual sound sources and generate separation signals of a plurality of channels; a speech recognition unit configured to input the separation signals of the plurality of channels, wherein the separation signals being generated by the sound source separation unit perform a speech recognition process, generate a speech recognition result corresponding to each channel, and generate additional information serving as evaluation information on the speech recognition result corresponding to each channel; and a channel selection unit configured to input the speech recognition result and the additional information, calculate a score of the speech recognition result corresponding to each channel by applying the additional information, and select and output a speech recognition result having a high score.

Description

technical field [0001] The present invention relates to a speech recognition device, a speech recognition method and a program. More specifically, the present invention relates to a speech recognition device that separates a mixed signal of a plurality of speech signals and performs speech recognition by using Independent Component Analysis (ICA: Independent Component Analysis), a speech recognition method for the speech recognition device, and a user program for the speech recognition device. Background technique [0002] An example of a process for separating a mixed signal of multiple speech signals is Independent Component Analysis (ICA). By applying speech recognition to the separation result obtained by ICA, the sound is separated into a desired sound and sounds other than the desired sound. Thereafter, by performing speech recognition processing, speech recognition of a desired sound source can be performed with high precision. [0003] There are already several sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L15/00G10L15/08G10L21/02G10L15/32G10L21/028
CPCG10L21/0272G10L2021/02166G10L15/20
Inventor 朝川智广江厚夫小川浩明本田等泽田务
Owner SONY CORP
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