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Voice detection device

A sound detection and sound signal technology, which is applied to measurement devices, ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems of low sensitivity of detection devices and indistinguishable small sounds, so as to improve sampling sensitivity and increase magnification. , the effect of suppressing non-audio interference signals

Inactive Publication Date: 2017-06-20
扬州海通电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a sound detection device to solve the technical defects of low sensitivity and inability to distinguish small sounds in the detection device in the prior art

Method used

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Embodiment Construction

[0015] The present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0016] Such as figure 1 , figure 2 As shown, a sound detection device includes a sound signal conversion unit 1, a filter unit 2, a sound signal amplification unit 3, a central processing unit 4 and a sound signal display unit 5, and the sound signal conversion unit 1 is sequentially connected to a filter unit, a sound signal Signal amplifying unit 3, central processing unit 4, described signal display unit 5 is connected central processing unit 4, and described filtering unit 2 and sound signal amplifying unit 3 comprise high-pass filter wave 21, low-pass filter 22 and one-stage operational amplifier 31 , the second-stage operational amplifier 32, the high-pass filter 21, the first-stage operational amplifier 31, the low-pass filter 22 and the second-stage operational amplifier 32 are connected in sequence. T...

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Abstract

A voice detection device comprises a voice signal conversion unit, a filter unit, a voice signal amplification unit, a central processing unit, and a voice signal display unit. The voice signal conversion unit is sequentially connected with the filter unit, the voice signal amplification unit and the central processing unit. The voice signal display unit is connected with the central processing unit. The filter unit and the voice signal amplification unit include a high-pass filter, a low-pass filter, a primary operational amplifier and a secondary operational amplifier. The high-pass filter, the primary operational amplifier, the low-pass filter and the secondary operational amplifier are connected in sequence. Compared with the prior art, the voice detection device of the invention carries out cross secondary filtering and secondary amplifying on external voice signals, non-audio interference signals are suppressed, the amplification factor is increased greatly, the sampling sensitivity is improved greatly, low voice can still be identified, the device is superior to the traditional voice control circuit, and the problem that low voice cannot be identified clearly is solved.

Description

technical field [0001] The invention relates to the technical field of miniaturized sound processing devices, in particular to a sound detection device. Background technique [0002] At present, most of the sound detection devices on the market have low sensitivity and cannot clearly distinguish small sounds. For example, speech recognition often has recognition errors and insensitivity, which brings some inconvenience to users. Contents of the invention [0003] The object of the present invention is to provide a sound detection device to solve the technical defects of low sensitivity and inability to distinguish small sounds in the detection device in the prior art. [0004] Technical scheme of the present invention is realized like this: [0005] A sound detection device, comprising a sound signal conversion unit, a filter unit, a sound signal amplification unit, a central processing unit, and a sound signal display unit, the sound signal conversion unit is sequentiall...

Claims

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Application Information

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IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 黄鹭
Owner 扬州海通电子科技有限公司
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