CN103584859B - A kind of Electroglottography device - Google Patents

A kind of Electroglottography device Download PDF

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Publication number
CN103584859B
CN103584859B CN201210287473.5A CN201210287473A CN103584859B CN 103584859 B CN103584859 B CN 103584859B CN 201210287473 A CN201210287473 A CN 201210287473A CN 103584859 B CN103584859 B CN 103584859B
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electroglottographicwaveform
described
signal
module
harvester
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CN201210287473.5A
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Chinese (zh)
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CN103584859A (en
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黄昭鸣
周林灿
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上海泰亿格康复医疗科技股份有限公司
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Abstract

The invention discloses a kind of Electroglottography device, comprising: signal controller, for regulating audio signal and ElectroglottographicWaveform signal; Audio collection device, is connected with signal controller, for gathering audio signal; ElectroglottographicWaveform harvester, is connected with signal controller, for gathering ElectroglottographicWaveform signal; Audio collection device and ElectroglottographicWaveform harvester respectively by the audio signal that collects and ElectroglottographicWaveform Signal transmissions to signal controller, signal controller regulates the amplitude of audio signal and ElectroglottographicWaveform signal.Electroglottography device of the present invention is simple for structure, adopts high frequency light current pressure, and signals collecting is more accurate, and can coordinate miscellaneous equipment, reaches good systematization and detects, assesses speech and Voice Disorders, have accuracy of detection height and widely used feature.

Description

A kind of Electroglottography device

Technical field

The invention belongs to medical instruments field, particularly relate to a kind of Electroglottography device.

Background technology

Nineteen fifty-seven Fabra first Application electronics glottogram checks that throat can think that larynx inspection is transitioned into the quantitative stage by qualitative stage, has now been widely used in the research of physiology and pathologic vibration.Electroglottography device refers to the glottogram electrode by being attached on throat's lamina of thyroid cartilage skin, to glottogram electrifying electrodes, due to the ElectroglottographicWaveform signal of the curent change acquisition that during larynx internal motion, between bilateral vocal cords, impedance variation causes.This instrument is very high for the requirement of precision, and the control for electric current, voltage must ensure in safety range.Meanwhile, can a large amount of signals be fed back by ElectroglottographicWaveform signal, as vocal cord vibration fundamental frequency, make rate, perturbation, and the height change of the abduction degree of vocal cords and larynx position etc.Electroglottography device is mainly used in scientific research and clinical research abroad, its potentiality are many in addition not to be excavated, especially more improvement can be had on easy to use, signal reliability, signal accuracy, lack relevant instant process data tool and applied courses simultaneously, because analyze limited to the ElectroglottographicWaveform detected, directly perceived not to reflection test result, in addition, existing Electroglottography device lacks human oriented design, too complicated operation and panel designs add obstacle to user, seriously limit benefited colony, be unfavorable for extensive use.

At existing hals,Nasen und Ohrenheilkunde medical domain, lack the pertinent instruments of assessment for speech disease, Voice Disorders, throat diseases and monitoring, applicable Electroglottography device is lacked, so that cannot to assess with actual clinical and rehabilitation is combined in application practice.

Traditional Electroglottography device of the prior art adopts low-frequency voltage, for trickle throat state (such as, during vocal cord vibration on vocal cords lower edge change, vocal cords sticking to mould ripple variation) cannot detect in time, even correlated signal data cannot be obtained, especially when detecting women and child, because speech sound frequency range is higher, and the thyroid position of women and child is not obvious, ElectroglottographicWaveform electrode position may be incorrect, finally cause detection signal inaccurate or cannot obtain expect data.The present invention uses high frequency light current pressure (high frequency carrier voltage), the slight change of throat can be detected very sensitively, can carry out throat's detection, have sizable advantage to the crowd of full age bracket.

The present invention does not disturb normal sounding, simple to operate, can differentiate to cause the source occurring speech or voice disorder to be sonification system or other functional area.The present invention can coordinate relevant device, such as computer, oscillograph etc., to breathing pattern, exhale support, breathe and sounding harmony, play sound mode, resonant function that sounding fundamental frequency, intensity of phonation, sounding tonequality and oral cavity, nasal cavity focus on assesses, clinical with scientific research on be with a wide range of applications.The present invention is connected with other external equipments and coordinates software application, can realize the complete analysis of signal.

The invention provides a kind of objectively checkout gear and detection method, is a kind of by microphone collection audio signal (i.e. sound wave) acoustic method analysis, the special high-accuracy device being gathered ElectroglottographicWaveform signal (i.e. ElectroglottographicWaveform ripple) electro physiology methods analyst by glottogram electrode.The impedance variation caused between bilateral vocal cords when the present invention uses glottogram electrode directly to gather user larynx internal motion, realizes effectively accurately detecting.The present invention can be widely used in multiple field, as scientific research, medical science detection, rehabilitation inspection and detection, effectively can obtain the state of an illness and the rehabilitation situation of patient, such as, for being not suitable for the child patient making laryngoscope.The present invention is simple to operate, and only need put on equipment opening power can use.The present invention has filled up the blank of domestic and international Electroglottography device.

Summary of the invention

Instant invention overcomes the above-mentioned defect of Electroglottography device in prior art, a kind of Electroglottography device is provided.Electroglottography device of the present invention is simple for structure, and break through traditional low-frequency voltage restriction, adopt high frequency light current pressure, signals collecting is more accurate.Simultaneously can coordinate miscellaneous equipment (as computer and software etc.), realize detecting and assessment the systematization of speech and Voice Disorders and Signs, the high and widely used feature of tool precision in clinical and scientific research.

The present invention proposes a kind of Electroglottography device, comprising:

Signal controller, for regulating audio signal and ElectroglottographicWaveform signal;

Audio collection device, is connected with described signal controller, for gathering described audio signal;

ElectroglottographicWaveform harvester, is connected with described signal controller, for gathering described ElectroglottographicWaveform signal;

Wherein, described audio collection device will the audio signal transmission that collect to described signal controller; The ElectroglottographicWaveform Signal transmissions extremely described signal controller that described ElectroglottographicWaveform harvester will collect; Amplitude, the frequency of audio signal and ElectroglottographicWaveform signal described in described signal controller amplification, low-pass filtering.

In the present invention, described signal controller comprises shell, and is arranged on audio signal filter and amplification module, high frequency oscillation module, ElectroglottographicWaveform filter and amplification module, output control module and the monitoring modular in this shell; Wherein,

Audio signal filter and amplification module, is connected with described audio collection device, the audio signal that audio collection device collects for amplifying, described in low-pass filtering.

High frequency oscillation module, is connected with described ElectroglottographicWaveform harvester, sends high-frequency oscillation signal to described ElectroglottographicWaveform harvester.

ElectroglottographicWaveform filter and amplification module, is connected with described ElectroglottographicWaveform harvester, the ElectroglottographicWaveform signal that ElectroglottographicWaveform harvester collects for amplifying, described in low-pass filtering.

Output control module, itself and described audio signal filter and amplification model calling, for exporting described audio signal; Itself and described ElectroglottographicWaveform filter and amplification model calling, for exporting described ElectroglottographicWaveform signal.

Monitoring modular, itself and described audio signal filter and amplification model calling, for detecting the intensity of described audio signal; Itself and described ElectroglottographicWaveform filter and amplification model calling, for detecting the intensity of described ElectroglottographicWaveform signal.

In the present invention, the frequency of the high-frequency oscillation signal of the output of described high frequency oscillation module is 2.5 ± 0.2MHz.

In the present invention, described audio collection device is microphone; Described microphone is single sensing Low ESR power type microphone, unidirectional capacitive microphone.

In the present invention, described ElectroglottographicWaveform harvester comprises ElectroglottographicWaveform electrode, and it is connected with described signal controller by electrode cable, for gathering ElectroglottographicWaveform signal.

Described ElectroglottographicWaveform electrode comprises the first ElectroglottographicWaveform electrode, the second ElectroglottographicWaveform electrode.

The diameter of described ElectroglottographicWaveform electrode is child 25mm, adult 32mm, and frequency response is 70Hz ~ 500Hz, and in described frequency response range, gain is 0 ~-3dB.

In the present invention, described ElectroglottographicWaveform harvester comprises electrode neckstrap further, and electrode neckstrap is fixedly connected on described ElectroglottographicWaveform electrode, for fixing described ElectroglottographicWaveform electrode, comprises the first ElectroglottographicWaveform electrode, the second ElectroglottographicWaveform electrode.

In the present invention, described signal controller comprises Isolation input module further; Described Isolation input module installation between described ElectroglottographicWaveform harvester and ElectroglottographicWaveform filter and amplification module, for improving the signal to noise ratio of ElectroglottographicWaveform signal that described ElectroglottographicWaveform harvester gathers.

In the present invention, described signal controller comprises isolation and amplifier module further; Described isolation and amplifier module installation between described ElectroglottographicWaveform harvester and high frequency oscillation module, for improving the anti-common mode disturbances ability of described high-frequency oscillation signal.

The present invention comprises signal processor further, and described signal processor is connected with described signal controller, the audio signal exported for the treatment of described signal controller and/or ElectroglottographicWaveform signal.

Accompanying drawing explanation

Fig. 1 is the structural representation of Electroglottography device of the present invention.

Fig. 2 is the structural representation of Electroglottography device of the present invention.

Fig. 3 is the schematic diagram of ElectroglottographicWaveform harvester.

Fig. 4 is structure and the using state schematic diagram of Electroglottography device of the present invention.

Fig. 5 is the internal pull-up circuit schematic diagram of Electroglottography device of the present invention.

Fig. 6 is the operating circuit schematic diagram of ElectroglottographicWaveform harvester.

Detailed description of the invention

Below in conjunction with drawings and Examples, the present invention is described in more detail, but should not limit the scope of the invention with this.

As shown in figures 1 to 6, 1-signal controller, 2-audio collection device, 3-ElectroglottographicWaveform harvester, 4-signal processor, 11-audio signal filter and amplification module, 12-high frequency oscillation module, 13-ElectroglottographicWaveform filter and amplification module, 14-output control module, 15-monitoring modular, 16-shell, 17-Isolation input module, 18-isolation and amplifier module, 31-first ElectroglottographicWaveform electrode, 32-second ElectroglottographicWaveform electrode, 33-electrode cable, 34-electrode neckstrap, 51-on and off switch, 52-power supply indicator, 53-audio signal input gain switch, 54-input signal selector switch, 55-ElectroglottographicWaveform signal input gain amplifier switch, 56-audio signal input end mouth, 57-ElectroglottographicWaveform signal input port, 58-LED level indicating signal lamp, 59-signal output port, 50-signal output port.

As shown in Figure 1 and Figure 2, Electroglottography device of the present invention comprises signal controller 1, audio collection device 2, ElectroglottographicWaveform harvester 3.Audio collection device 2, ElectroglottographicWaveform harvester 3 are connected with signal controller 1 respectively.Audio collection device 2 by the audio signal transmission that collects to signal controller 1, ElectroglottographicWaveform harvester 2 by the ElectroglottographicWaveform Signal transmissions that collects to signal controller 1.Signal controller 1 regulates the amplitude of audio signal and ElectroglottographicWaveform signal.In the present invention, " audio signal " refers to microphone input signal." ElectroglottographicWaveform signal " refers to ElectroglottographicWaveform electrode input signal.

Signal controller 1 comprises: shell 16 and be arranged on audio signal filter and amplification module 11, high frequency oscillation module 12, ElectroglottographicWaveform filter and amplification module 13, output control module 14, the monitoring modular 15 of shell 16 inside.

One end of audio signal filter and amplification module 11 is connected with audio collection device 2, and one end connects output control module 14, and the other end connects monitoring modular 15.After the audio signal that audio collection device 2 collects by audio signal filter and amplification module 11 carries out low-pass filtering, amplification, and by the audio signal transmission after amplification to output control module 14.The intensity of monitoring modular 15 Real-Time Monitoring audio signal filter and amplification module 11 output signal.

High frequency oscillation module 12 is connected with ElectroglottographicWaveform harvester 3, by Power supply, produces concussion level, provides high-frequency oscillation signal to ElectroglottographicWaveform ripple harvester 3.

As shown in Figure 6, high frequency oscillation module 12 be by LC resonance circuit, stablize amplifying circuit, abate the noise circuit.Audion Q9, Q10, Q11 are connected and together constitute electric disturbance amplifying circuit as main body, and outfan is connected with LC resonance circuit.LC resonance circuit is made up of electric capacity C27 and inductance L 10, can select high-frequency band.LC resonance circuit outfan is connected with stable amplifying circuit (Q7, Q8), and the latter can play stable oscillation stationary vibration level and amplification, and outfan is connected with isolation and amplifier module 18.C23, C24, C26, C28, C30, C31, C33 play the effect abated the noise, and its function prevents from high-frequency signal to be diverted in power supply to go, and also inhibits power supply signal simultaneously and scurry in high-frequency circuit and go, can reduce noise further.

One end of ElectroglottographicWaveform filter and amplification module 13 is connected with ElectroglottographicWaveform harvester 3, and one end connects output control module 14, and the other end connects monitoring modular 15.The ElectroglottographicWaveform signal that ElectroglottographicWaveform harvester 3 collects by ElectroglottographicWaveform filter and amplification module 13 carry out filtering and amplify after, and by amplify after ElectroglottographicWaveform Signal transmissions to output control module 14.The intensity of monitoring modular 15 Real-Time Monitoring ElectroglottographicWaveform filter and amplification module 13 output signal.

One end of output control module 14 connects audio signal filter and amplification module 11, receives the audio signal exported through audio signal filter and amplification module 11.One end of output control module 14 connects ElectroglottographicWaveform filter and amplification module 13, receives the ElectroglottographicWaveform signal exported through ElectroglottographicWaveform filter and amplification module 13.The all right connection signal processor 4 of the other end of output control module 14, the audio signal that output control module 14 is received and/or ElectroglottographicWaveform Signal transmissions are to signal processor 4.

The signal processor 4 be connected with signal controller 1, the audio signal exported for the treatment of signal controller 1 and/or ElectroglottographicWaveform signal.

As shown in Figure 2, signal controller 1 also comprises Isolation input module 17 further.As shown in Fig. 2, Fig. 6, Isolation input module 17 is arranged between ElectroglottographicWaveform ripple harvester 3 and ElectroglottographicWaveform filter and amplification module 13, for improving the signal to noise ratio of the audio signal that ElectroglottographicWaveform ripple harvester 3 gathers.Isolation input by the signal isolated transmission that gathers from another ElectroglottographicWaveform electrode to ElectroglottographicWaveform filter and amplification module 13.That is, described Isolation input module 17, ElectroglottographicWaveform filter and amplification module 13 the signal input that the another electrode except exporting the electrode of high frequency light current pressure collects are isolated and amplify to be transferred to control output module 14.

As shown in Figure 2, signal controller 1 also comprises isolation and amplifier module 18 further.As shown in Fig. 2, Fig. 6, isolation and amplifier module 18 is arranged between ElectroglottographicWaveform harvester 3 and high frequency oscillation module 12, the level isolation that the higher-order of oscillation produces by isolation and amplifier is after-applied on ElectroglottographicWaveform electrode, for improving the anti-common mode disturbances ability of high-frequency oscillation signal.

Isolation input, isolation and amplifier adopt isolating transformer, all with screen layer isolation between the primary and secondary coil of isolating transformer, reduce its distribution capacity, to improve opposing common mode disturbances ability.

Audio collection device 2 comprises microphone pattern and uses single sensing Low ESR power type.It can also be unidirectional capacitive microphone.Audio collection device 2 gathers the acoustical signal of patient in voiced process, and the audio signal collected being sent to the audio signal filter and amplification module 11 of signal controller 1, the frequency response of audio signal filter and amplification module is 0.5 ~ mono-2.5dB in 70Hz ~ 500Hz frequency range.Preferably, adopt single sensing Low ESR power type microphone, entry type is 6.3mm plug or the mini plug of 3.5mm (available 3.5mm → 6.35mm patchplug).

As Figure 1-4, ElectroglottographicWaveform harvester 3 is connected with signal controller 1, the electrode cable 33 that ElectroglottographicWaveform harvester 3 comprises ElectroglottographicWaveform electrode and is connected with ElectroglottographicWaveform electrode, for gathering ElectroglottographicWaveform signal.ElectroglottographicWaveform electrode comprises the first ElectroglottographicWaveform electrode 31, second ElectroglottographicWaveform electrode 32.First ElectroglottographicWaveform electrode 31 is connected with signal controller 1 by electrode cable 33 with the second ElectroglottographicWaveform electrode 32, and the first ElectroglottographicWaveform electrode 31 and the second ElectroglottographicWaveform electrode 32 are for gathering ElectroglottographicWaveform signal.

One end of electrode cable 33 connects the first ElectroglottographicWaveform electrode 31, and one end connects the second ElectroglottographicWaveform electrode 32, and the other end can be connected with signal controller 1.Preferably, one end of electrode cable 33 arranges electrode plug (not shown), can insert socket corresponding on shell 16 panel of signal controller 1 easily, such as, and ElectroglottographicWaveform signal input port 57.

ElectroglottographicWaveform harvester 3 comprises electrode neckstrap 34 further.Electrode neckstrap 34 is for fixing the first ElectroglottographicWaveform electrode 31, second ElectroglottographicWaveform electrode 32.ElectroglottographicWaveform electrode 31, ElectroglottographicWaveform electrode 32 can be fixed on patient's cervical region by electrode neckstrap 34, between the bilateral vocal cords being positioned over patient throat respectively.The ElectroglottographicWaveform signal collected is transferred to the ElectroglottographicWaveform filter and amplification module 13 in signal controller 1 by the first ElectroglottographicWaveform electrode 31, second ElectroglottographicWaveform electrode 32 by electrode cable 33.

Embodiment 1: Electroglottography device is set

As shown in Figure 1, Electroglottography device of the present invention comprises signal controller 1, audio collection device 2, ElectroglottographicWaveform harvester 3.Audio collection device 2 adopts microphone.Electroglottography device of the present invention should check that whether power supply is normal before the use.Preferably, the present invention adopts battery supply, and such as, totally 6 joint 1.5V (R20) large size batteries, voltage is DC9V, electric current < 40mA, and when supply voltage is too low, green power supply LED light is glimmered.Power supply, by after rectification, filtering, voltage stabilizing, is powered to system components.Then microphone 2, ElectroglottographicWaveform ripple harvester 3, signal processor 4 (equipment as subsequent treatment data) are connected with signal controller 1 respectively and arrange.Wherein, microphone 2 is connected with audio signal filter and amplification module 11, and ElectroglottographicWaveform harvester 3 and ElectroglottographicWaveform filter and amplification module 13, signal processor 4 is connected with output control module 14.

As shown in Figure 1, Figure 3, signal controller 1 comprises shell 16.The shell body rear cover of shell 16 comprises battery cover board and battery cover board screw.Shell 16 panel is provided with on and off switch 51, power supply indicator 52, audio signal input gain switch 53, input signal selector switch 54, ElectroglottographicWaveform signal input gain amplifier switch 55, audio signal input end mouth 56, ElectroglottographicWaveform signal input port 57, the flat clearing lamp 58 of LED electrical, signal output port 59, signal output port 50.

Embodiment 2: the collection of signal and monitoring

Power-on, in running order and before received audio signal or ElectroglottographicWaveform signal in Electroglottography device, according to variety classes and the demand of input signal, Electroglottography device is arranged respectively, regulate the input signal selector switch 54 on shell 16 panel, comprise " Mic ", " EGG ", " Mic EGG " third gear.Such as, if when input signal is the audio signal of microphone 2 collection, then input signal selector switch 54 is adjusted to microphone " Mic " (Mic:Microphone mike or microphone) shelves.If input signal is the ElectroglottographicWaveform signal that ElectroglottographicWaveform ripple harvester 3 gathers, then input signal selector switch 54 is adjusted to ElectroglottographicWaveform " EGG " (EGG:Electroglottograghy ElectroglottographicWaveform) shelves.If when input signal comprises input audio signal and ElectroglottographicWaveform signal simultaneously, then input signal selector switch 54 is adjusted to microphone and ElectroglottographicWaveform " Mic EGG " shelves.

Audio signal input end mouth 56 on shell 16 panel, in order to be connected with sound pick-up outfit such as microphone 2 grade.Electroglottography device ElectroglottographicWaveform signal input port 57 on shell 16 panel, in order to be connected with ElectroglottographicWaveform ripple harvester 3.

As shown in Figure 3, according to the input requirements of audio signal (sound), preferably, by regulating the audio signal input gain amplifier switch 53 on shell 16 panel, comprise 10dB, 20dB, 30dB, 40dB, 50dB five gears, in order to regulate the gain amplifier after Speech input.The gain amplifier of its audio signal filter and amplification module 11 can be adjusted to gear (every grade of error ± 2dB) that 10dB, 20dB, 30dB, 40dB, 50dB five successively increase to carry out amplification to input audio signal and selects.

As shown in Figure 3, according to the demand of ElectroglottographicWaveform signal input, preferably, by regulating the ElectroglottographicWaveform signal input gain amplifier switch 55 on shell 16 panel, comprise low " Low (-6dB) ", in " Mid (0dB) ", high " High (6dB) " third gear, in order to adjust the input gain amplifier size of ElectroglottographicWaveform signal.The amplification that gain amplifier switch can be adjusted to Low (gain-6dB (± 1dB)), Mid (gain 0dB), High (gain+6dB (± 1dB)) successively increase of ElectroglottographicWaveform filter and amplification module 13 is selected, every grade of interval 6dB.

Preferably, the first ElectroglottographicWaveform electrode 31, the second ElectroglottographicWaveform electrode 32 being used for gathering ElectroglottographicWaveform signal is gold-plated electrode.Preferably, the diameter of described electrode is 25/32mm; The long 1.2-1.4m of described electrode cable; The carrier frequency of described electrode is 2.5 ± 0.2MHz, and the gain of frequency response in 70Hz ~ 500Hz frequency range is 0 ~-3dB.The material, dimensioned area, electrode length, frequency etc. of electrode can be the various situations that the present invention is suitable for, unrestricted.

Start acquired signal.When having audio signal or the input of ElectroglottographicWaveform signal, monitoring modular 15 shows the power of current demand signal by the flat clearing lamp 58 of LED electrical.In the present embodiment, monitoring modular 15 is core devices by a slice TL064CN chip and two panels LM3915 chip.TL064CN chip has high input impedance, has the features such as wider bandwidth, drift current, input bias current are little.The input of TL064CN is connected with audio signal filter and amplification module 11, ElectroglottographicWaveform filter and amplification module 13 respectively, and its outfan is then connected with the input of LM3915 chip.Signal can be adjusted to the suitable incoming level of LM3915 by TL064CN.

LM3915 is IC chip, drives/control at least one LED, LCD or fluorescent display screen by input level value, can realize controlling in units of point or controlling in units of row according to the difference of user demand, such as, drive/control ten LED.Each of LM3915 drives interface to connect a LED.Two panels LM3915 chip controls the single LED of two rows respectively accordingly, wherein, and row's LED instruction acoustical signal, another row's LED instruction ElectroglottographicWaveform signal.When having audio signal or the input of ElectroglottographicWaveform signal, the flat clearing lamp 58 of LED electrical can show the power of acoustical signal/ElectroglottographicWaveform signal.When signal is stronger, corresponding single LED is bright must be more.When signal reaches the strongest, then all clearing lamp is bright.Otherwise the flat display lamp of LED electrical goes out entirely when not having signal to input.

Signal can export by signal output port 59,50, and it is connected with external equipment input, such as, be connected with signal processor 4.

Embodiment 3: the filtering of audio signal and amplification

In the present embodiment, when acoustical signal inputs, the audio signal directly inputted due to microphone 2 is with noise and volume is low, needs to carry out pretreatment in filter amplifier, namely carries out filtering and amplification by audio signal filter and amplification module 11.Preferably, audio signal filter and amplification module 11 comprises operational amplifier, feedback resistance and a gauge tap.Feedback resistance is connected with gauge tap and jointly forms the feedback impedance of operational amplifier, and two ends are connected with outfan with the feedback end of operational amplifier respectively, forms feedback circuit.Preferably, operational amplifier adopts model to be NE5534N amplifier chip, and this amplifier is a low noise, bandwidth is the operational amplifier of 10MHz.When changing gauge tap, namely change the impedance magnitude of feedback circuit, and then change the gain amplification of whole operational amplifier.Preferably, gauge tap is provided with 5 grades, corresponding 5 different resistance.Audio signal after filter and amplification is exported by output control module 14; Also transfer to signal processor 4 by output control module 14.

Embodiment 4: the filtering of ElectroglottographicWaveform signal and amplification

In the present embodiment, gather ElectroglottographicWaveform signal by ElectroglottographicWaveform harvester 3, need further to remove unwanted part in gathered ElectroglottographicWaveform signal by filter and amplification.Preferably, the filtration module in ElectroglottographicWaveform filter and amplification module 13 is based on two pieces of op07 operational amplifiers, and this amplifier noise is low, coordinates other resistance and semiconductor device effectively can filter the ElectroglottographicWaveform signal of input.Gain amplifier module in ElectroglottographicWaveform filter and amplification module 13 is realized by two panels HA17741 operational amplifier and feedback resistance and gauge tap.Wherein, HA17741 has high voltage gain characteristic, feedback resistance is connected with gauge tap and together constitutes the feedback impedance of operational amplifier, ins succession the feedback end of operational amplifier and the outfan of operational amplifier respectively in its two ends, thus forms the feedback circuit of operational amplifier.When changing gauge tap, the impedance magnitude on operational amplifier on feedback circuit can be changed, and then change the gain amplification of whole operational amplifier.ElectroglottographicWaveform signal can obtain desirable amplification effect after operational amplifier, and is exported by output control module 14; Also transfer to signal processor 4 by output control module 14.

Embodiment 5: signal exports and controls

As shown in Figure 5, output control module 14 is for exporting control signal, and its function realizes by gauge tap.As shown in Figure 5, preferably, gauge tap is made up of two switch gearings, and one end of first K switch 1 is connected with audio signal filter and amplification module 11, and one end is connected with the signal output port 59 of Electroglottography device in addition; One end of second K switch 2 is connected with ElectroglottographicWaveform filter and amplification module 13, and the other end is connected with the signal output port 50 of Electroglottography device, and signal output port is connected with signal processor 4.

Switched input signal selector switch 54.When being only acoustical signal and exporting, K1 closes, and K2 disconnects, and audio signal is exported to signal processor 4; When just ElectroglottographicWaveform signal exports, K1 disconnects, and K2 closes, and ElectroglottographicWaveform signal exports signal processor 4 to; When audio signal and ElectroglottographicWaveform signal export simultaneously, K1 and K2 is closed, and audio signal and ElectroglottographicWaveform signal export signal processor 4 to simultaneously.

Use one of detailed description of the invention of Electroglottography device of the present invention, audio collection device 2 and ElectroglottographicWaveform harvester 3 can be utilized to collect audio signal and the ElectroglottographicWaveform signal of user, as shown in Figure 4 simultaneously.Before use, first microphone 2 and ElectroglottographicWaveform harvester 3 are connected in Electroglottography device of the present invention.Microphone 2 is near the mouth of user, and ElectroglottographicWaveform harvester 3 is fixed on patient's cervical region by electrode neckstrap 34, and ElectroglottographicWaveform electrode 32 is placed between the bilateral vocal cords of patient throat respectively.Debug successfully until power supply and open Electroglottography device, then, the input signal selector switch 54 on adjustment shell 16 panel is to " Mic EGG " shelves.When user's sounding, microphone 2 collects the audio signal of user voice, and ElectroglottographicWaveform harvester 3 collects ElectroglottographicWaveform signal.Audio signal ElectroglottographicWaveform signal is sent in signal controller 1 by microphone 2 and ElectroglottographicWaveform harvester 3 respectively.Signal controller 1 is processed by audio signal filter and amplification module 11 pairs of audio signals, noise signal in filtering audio signal, improve the signal to noise ratio of audio signal, reduce the impact of noise on user's audible signal, and filtered audio signal is carried out power amplification, and the audio signal after process is sent to output control module 14 by audio signal filter and amplification module 11 subsequently.Similarly, ElectroglottographicWaveform signal carries out filtering and processing and amplifying by Isolation input module 17 and ElectroglottographicWaveform filter and amplification module 13 successively, and the ElectroglottographicWaveform signal after process is sent to output control module 14 by ElectroglottographicWaveform filter and amplification module 13.The signal intensity that monitoring modular 15 is exported by Real-Time Monitoring audio signal filter and amplification module 11 and ElectroglottographicWaveform filter and amplification module 13, by the real-time shows signal intensity of the flat display lamp of LED electrical.The audio signal received and ElectroglottographicWaveform signal are sent to the signal processor 4 be attached thereto and carry out subsequent treatment by output control module 14 respectively.

The foregoing is only preferred embodiment of the present invention, be not used for limiting practical range of the present invention.Have in any art and usually know the knowledgeable, without departing from the spirit and scope of the present invention, when doing various variation and retouching, the protection domain that scope should define with claims is as the criterion.

Claims (9)

1. an Electroglottography device, is characterized in that, comprising:
Signal controller (1), it is for regulating audio signal and ElectroglottographicWaveform signal;
Audio collection device (2), it is connected with described signal controller (1), for gathering described audio signal;
ElectroglottographicWaveform harvester (3), it is connected with described signal controller (1), adopts ElectroglottographicWaveform signal described in the weak voltage acquisition of high frequency; Described ElectroglottographicWaveform harvester (3) comprises ElectroglottographicWaveform electrode (31,32); Described ElectroglottographicWaveform electrode (31,32) be connected with described signal controller (1) by electrode cable (33), one of described ElectroglottographicWaveform electrode (31,32) is for exporting high frequency light current pressure, and another is for gathering ElectroglottographicWaveform signal;
Wherein, described audio collection device (2) will the audio signal transmission that collect to described signal controller (1); The ElectroglottographicWaveform Signal transmissions extremely described signal controller (1) that described ElectroglottographicWaveform harvester (3) will collect; Amplitude, the frequency of audio signal and ElectroglottographicWaveform signal described in described signal controller (1) amplification, low-pass filtering.
2. Electroglottography device as claimed in claim 1, it is characterized in that, described signal controller (1) comprises shell (16), and is arranged on audio signal filter and amplification module (11), high frequency oscillation module (12), ElectroglottographicWaveform filter and amplification module (13), output control module (14) and the monitoring modular (15) in described shell (16); Wherein,
Described audio signal filter and amplification module (11), is connected with described audio collection device (2), for the audio signal that audio collection device (2) described in amplification, low-pass filtering collects;
Described high frequency oscillation module (12), is connected with described ElectroglottographicWaveform harvester (3), sends high-frequency oscillation signal to described ElectroglottographicWaveform harvester (3);
Described ElectroglottographicWaveform filter and amplification module (13), is connected with described ElectroglottographicWaveform harvester (3), for the ElectroglottographicWaveform signal that ElectroglottographicWaveform harvester (3) described in amplification, low-pass filtering collects;
Described output control module (14), it is connected with described audio signal filter and amplification module (11) and ElectroglottographicWaveform filter and amplification module (13), for exporting described audio signal and ElectroglottographicWaveform signal;
Described monitoring modular (15), it is connected with described audio signal filter and amplification module (11) and ElectroglottographicWaveform filter and amplification module (13), for detecting the intensity of described audio signal and/or described ElectroglottographicWaveform signal.
3. Electroglottography device as claimed in claim 2, it is characterized in that, the frequency of the high-frequency oscillation signal of the output of described high frequency oscillation module (12) is 2.5 ± 0.2MHz.
4. Electroglottography device as claimed in claim 1, it is characterized in that, described audio collection device (2) is microphone; Described microphone is single sensing Low ESR power type microphone, unidirectional capacitive microphone.
5. Electroglottography device as claimed in claim 4, it is characterized in that, the diameter of described ElectroglottographicWaveform electrode (31,32) is 25/33mm, the frequency response of ElectroglottographicWaveform filter and amplification module is 70Hz ~ 500Hz, and in described frequency response range, gain is 0 ~-3dB.
6. Electroglottography device as claimed in claim 4, it is characterized in that, described ElectroglottographicWaveform harvester (3) comprises electrode neckstrap (34) further; Described electrode neckstrap (34) is fixedly connected with described ElectroglottographicWaveform electrode (31,32).
7. Electroglottography device as described in any one of claim 1-6, is characterized in that, described signal controller (1) comprises Isolation input module (17) further; Described Isolation input module (17) is arranged between described ElectroglottographicWaveform harvester (3) and ElectroglottographicWaveform filter and amplification module (13), for improving the signal to noise ratio of the ElectroglottographicWaveform signal that described ElectroglottographicWaveform harvester (3) gathers.
8. Electroglottography device as described in claim 1-6 to any one, is characterized in that, described signal controller (1) comprises isolation and amplifier module (18) further; Described isolation and amplifier module (18) is arranged between described ElectroglottographicWaveform harvester (3) and high frequency oscillation module (12), for improving the anti-common mode disturbances ability of described high-frequency oscillation signal.
9. Electroglottography device as described in any one of claim 1-6, it is characterized in that, comprise signal processor (4) further, described signal processor (4) is connected with described signal controller (1), the audio signal exported for the treatment of described signal controller (1) and/or ElectroglottographicWaveform signal.
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