Electroglottography，EGG) is a conventional instrument with a change in throat activity and vocal cord contact area during the process of measurement of speech.。The electronic sound door instrument Bet365 Casino loginof the Voice Laboratory of Shandong University is EG2-PCX2 produced by Glottal Company。

1. Hardware system

EGG host、Adult electrode pressure tablets (35mm)、Children's electrode press (27mm)、microphone、Power adapter、XLR cable、USB wiring、Neckband、Conductive Ointment、laryngeal simulator

2. Working principle

EGG signal changes according to the different size of the vocal cord contact area，The larger the contact area of ​​the vocal cord，Egg signal stronger，Converse，When the vocal cord is opened，Egg signal weak。

3, signal collection

Place the electrode pressure Bet365 Casino loginon the outside of the tested neck of the neck，Cable interface inserted into the host electrode slot; connect the microphone into the host microphone port; output the signal to the computer through the USB wiring;。

4. Data analysis

Use self -edited MATLAB program、Open source software and commercial software extract the base frequency from the voice signal and electro -acoustic door signal、Hydrophil amplitude difference (H1-H2/A1/A2/A3)、Signal and noise ratio、Parameters such as opening business and speed quotient，Then define the voice type。bet365 live casino gamesThe most common voice sound type has normal voice、Squeeze throat sound and qi voice。

Normal voice: about 50%，Speed ​​business is about 200%，EGG waveforms have a high degree of left leaning;

Squeezing throat sound: Compared with normal voice，Its business is smaller、Speed ​​quotient is larger、Low base frequency、Irregular amplitude;

Qi Voice: Compared with normal voice，It is bigger for its business、Speed ​​quotient is smaller、Base frequency is usually low。

5. Application field

Electronic Sound Gate instruments are widely used in language voice vocal sound type research、Bet365 Casino loginSound pattern identification、Voice evaluation and pathological voice diagnosis、Art sound、Emotional voice synthesis and other fields。