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Voice signal acquisition device and method

A technology of sound signal and acquisition device, which is applied in the field of photoelectric detection, can solve the problems of fluctuation of sound recognition effect, inability to recognize, and can only be used at a short distance, and achieves the effect of reducing interference, effective acquisition, and noise reduction processing.

Inactive Publication Date: 2017-05-10
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] At present, the voice interaction of intelligent hardware is affected by multiple complex factors such as background noise, such as other human voices, echoes, reverberations, etc., resulting in fluctuations or a lot of reduction in the voice recognition effect, or even unrecognizable, and can only be used at close range in actual application scenarios

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  • Voice signal acquisition device and method
  • Voice signal acquisition device and method

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Embodiment Construction

[0027] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to figure 1 , the embodiment of the present invention provides a sound signal acquisition device, including a laser interferometry system 10, a sound receiving device 11 and a processing system 12;

[0029] The laser interferometry system 10 is used to send detection light to the vibrating surface of the target, and...

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Abstract

The invention discloses a voice signal acquisition device and method. The device comprises a laser interference measurement system, a sound receiving device and a processing system, wherein the laser interference measurement system is used for sending detection light to a vibrating surface of a target, receiving return light reflected from the vibrating surface of the target and obtaining a vibrating signal characterizing the surface vibration of the target through a mixing interference signal obtained by merging the return light and reference light; the sound receiving device is used for collecting sound on the direction of the target; and the processing system is used for performing calculation according to the vibrating signal to obtain a first sound signal frequency spectrum, performing calculation according to the signal collected by the sound receiving device to obtain a second sound signal frequency spectrum, and performing filtering processing on the second sound signal frequency spectrum through the first sound signal frequency spectrum, and performing restoration to obtain a sound signal generated by the target. By adoption of the voice signal acquisition device and method disclosed by the invention, noise reduction processing during the sound acquisition is realized. The interference of background noise can be reduced, and the sound of the target can be obtained more effectively.

Description

technical field [0001] The invention relates to the technical field of photoelectric detection, in particular to a sound signal acquisition device and method. Background technique [0002] Smart home is slowly becoming a familiar thing, and it is expected to usher in explosive growth in the future. Touch, gesture and voice are currently the three major ways for smart devices to interact with people. Among them, voice interaction is more natural and reasonable in the home scene, because users can complete the required work with fewer steps. [0003] At present, the voice interaction of intelligent hardware is affected by multiple complex factors such as background noise, such as other human voices, echoes, reverberations, etc., resulting in fluctuations or a lot of reduction in the voice recognition effect, or even unrecognizable, and can only be used at close range in actual application scenarios . The usage scenarios of smart home are mainly at home. There will be a dista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H9/00
CPCG01H9/00
Inventor 武俊峰吴一辉舒风风
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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