Electroglottograph，EGG) is a conventional instrument that measures changes in laryngeal activity and vocal cord contact area during speech production。The electronic glottal instrument of the Speech Laboratory of Shandong University is EG2-PCX2 produced by Glottal。

bet365 best casino games1. Hardware system

EGG host、Adult electrode tablets (35mm)、Children’s electrode tablets (27mm)、Microphone、Power adapter、XLR cable、USB cable、Neck strap、Conductive paste、Larynx Simulator

2. Working principle

EGG signal changes according to the size of the vocal cord contact area，The larger the vocal cord contact area，The stronger the EGG signal，Vice versa，When the vocal cords are open，EGG signal is weak。

3. Signal collection

Place the electrode pad on the outside of the thyroid cartilage in the subject's neck，Insert the cable interface into bet365 best casino gamesthe electrode slot of the host；Connect the microphone to the host microphone port；Output signal to computer via USB cable；The main test uses dual channels to simultaneously record bet365 live casino reviewino blackjack signals and electroglotttis signals。

4. Data analysis

Using self-written Matlab program、Open source and commercial software to extract fundamental frequency from speech signals and electroglotttis signals、Harmonic amplitude difference (H1-H2/A1/A2/A3)、Signal to noise ratio、Parameters such as development quotient and speed quotient，Then define the bet365 live casino reviewino blackjack type。bet365 best casino gamesThe most common type of bet365 live casino reviewino blackjack production is normal bet365 live casino reviewino blackjack、Three types of throat sounds and breathy voices。

Normal bet365 live casino reviewino blackjack: opening rate is about 50%，Speed ​​quotient is about 200%，EGG waveform peak has a higher degree of left tilt；

Squeezed throat sound: compared with normal bet365 live casino reviewino blackjack，Its business is small、Higher speed quotient、lower base frequency、Irregular amplitude；

Qiu bet365 live casino reviewino blackjack: compared to normal bet365 live casino reviewino blackjack，Its business is relatively large、The speed quotient is small、Fundamental frequency is usually lower。

5. Application fields

Electronic glottal instrument is widely used in the bet365 slotsstudy of speech vocalization types、Voiceprint identification、bet365 live casino reviewino blackjack assessment and pathological bet365 live casino reviewino blackjack diagnosis、Artistic bet365 live casino reviewino blackjack、Emotional speech synthesis and other fields。