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A noise reduction device and cleaning robot based on speech recognition

A technology for cleaning robots and speech recognition, applied in the field of robots, can solve the problems of low noise reduction effect, mixed external noise, low speech recognition accuracy, etc., and achieves the effect of thorough denoising effect and improving denoising efficiency.

Active Publication Date: 2022-02-08
AMICRO SEMICON CORP
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] Existing mobile robots (such as mechatronics equipment such as sweeping robots, window cleaning robots, and floor mopping robots among cleaning robots) will generate noise during work. The voice signal is picked up by voice, but when the voice signal from the user is picked up, the noise generated during the robot's work is usually picked up by voice, so that the voice signal picked up by the device is mixed with a lot of external noise , the corresponding voice recognition accuracy is not high, which will seriously affect the robot's recognition of external voices (effective signals), and make logical decisions based on voice interpretation (such as performing relevant path planning)
[0003] In the prior art, the method for denoising the front end of the voice signal is generally to select a suitable voice signal according to the result of the voice signal classification, and suppress the voice signal that does not meet the requirements, but the method for the voice signal classification is relatively complicated, reducing the The efficiency of speech recognition, and the failure to intelligently select the target speech signal, and directly eliminate the noise signal in the speech signal, the noise reduction effect is not high

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  • A noise reduction device and cleaning robot based on speech recognition

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Embodiment Construction

[0013] The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention.

[0014] refer to figure 1 As shown, the embodiment of the present invention also provides a noise removal device based on speech recognition, the base of the noise removal device is provided with a microphone array with a fixed orientation, some terms and explanations in this embodiment are the same as those in the above embodiment, I won't repeat them here.

[0015] The denoising device includes a confidence value acquisition unit, a pre-denoising unit and a processing unit, the confidence value acquisition unit is used to determine the target voice signal from the voice signals acquired by the microphone array, and acquire the target confidence value accordingly; The pre-denoising unit is used to receive the target confidence value obtained by the confidence value acquisition unit, and selec...

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Abstract

The invention discloses a voice recognition-based denoising device and a cleaning robot, comprising the following unit: a confidence value acquisition unit, used to determine a target voice signal from the voice signals acquired by the microphone array, and acquire the target confidence value accordingly The pre-denoising unit is used to receive the target confidence value obtained by the confidence value acquisition unit, and select the noise data matching the target confidence value from the noise database, and then control the noise data and the unmarked voiced part in the target speech signal The frame participates in pre-denoising processing to obtain a pre-denoising processing result corresponding to the noise data; the processing unit is used to correspond the pre-denoising processing result to The voiced frames of are marked as denoised voiced frames in the target voice signal; wherein, the target voice signal may include voiced frames associated with the control instruction.

Description

technical field [0001] The invention belongs to the technical field of robots, and in particular relates to a voice recognition-based denoising device and a cleaning robot. Background technique [0002] Existing mobile robots (such as mechatronics equipment such as sweeping robots, window cleaning robots, and floor mopping robots among cleaning robots) will generate noise during work. The voice signal is picked up by voice, but when the voice signal from the user is picked up, the noise generated during the robot's work is usually picked up by voice, so that the voice signal picked up by the device is mixed with a lot of external noise , the corresponding speech recognition accuracy is not high, which will seriously affect the robot's recognition of external speech (effective signal), and make logical decisions based on speech interpretation (such as performing relevant path planning). [0003] In the prior art, the method for denoising the front end of the voice signal is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L21/0216G10L15/20G10L15/22
CPCG10L15/20G10L15/22G10L21/0216G10L2015/223G10L2021/02166
Inventor 许登科
Owner AMICRO SEMICON CORP
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