digital language lab GD5110B

1. Multimedia Computer Language Lab 2. Student machine with 5' LCD 3. easy to install

The system introduction

 

GD5110B digital language lab, using the adaptive multi-channel digital audio in real time packet transmission protocol, combined with the world's most advanced semiconductor embedded (DSP) technology and streaming media technology, the audio signal entirely in the digital stream between the master control equipment and student terminal storage, exchange and transmission, and thus to obtain professional audio effects;make thesound delay time is less than 1 ms.

The system uses the international standard star network structure, the main switch to the students through a UTP cable terminal power supply, two-way simultaneous transmission of control signals and data (and can be extended to transmit high-definition video signals); compared to peer products, our products are more concise way of network cabling, security, installation and maintenance more convenient and faster.

The system benefits

 

1,Digital audio switching the host using the standard USB 2.0 interface with the host computer is connected to a common network interface or a dedicated data card connection, it achieved the easiest to install, setup, free support with electric plug,and avoid the dual network card settings,compared to other products in the industry has significant advantages:

2,High-speed digital audio mixer, transmission capacity make the voice delay is less than 1 ms:

3,Student terminal supports Chinese / English article automatically pronunciation demonstration reading,in a timely manner to correct the wrong pronunciation,rapid increase in the oral proficiency of students.

4,Advanced semiconductor embedded (DSP) technology to make the system highly integrated, simple and stable:

5,A number of unique user-friendly design:

a) Intelligent control system power:System software to open, students automatically open,System software to exit the system power supply is automatically shut down, the student computers automatically shut down

b)System software installation automation:system software installation only need to install knock press Enter key without any setting

c) Supply system through a standard UTP cable for the students to terminal, and the safe voltage is 9V cable cross

d) RJ11 crystal connectormicrophone headset, high-fidelity magnetic, sound quality is clear and sweet,High tensile strength, flexural

e) Systemwith real-timeonlineself-testfunction:Student computers can automatically identify the fault of the headphones, and shielding the point of failure, ensure that the system normal

f) Student machines without coding,andcan exchange, plug and play, making the system simplerand convenient.

6,Low-carbon, environmentally friendly, energy-saving:

The system structure

 

 The system features list

 

item	Function
Cover all the features of the analog language lab
Teachingfunction	Audio broadcasting	Screen broadcasting
	Screen monitor	Voice intercom
	Group discussion	Whiteboard
	Job submission	E-Responder
	Digital courseware	Electronic show of hands
Autonomous learning function	Audio on demand	Text-on-demand
	IP Telephony	Electronic Dictionary
	Same transfer speed playback	Synchronous playback of sound text
	Recording repeat it after	In English automatically lead time
	Simultaneous interpretation	Learning Exchange
Examination function	Independent examination andassessment	The mode of examination papers sent
	Students answer	Paper production
Management function	Remote control	Black silence
	Teachers locked	System Settings
	Students headset automatically detect	Remote delegated administration
	Support network	Network control
	Monitor	Electronic roll call
	Electronic roll call

Equipment technical indicators parameter

 

Project Name	The main technical parameters
System reliability	Mean time between failures: the master control equipment: 10,000 hours, crashes and failures dropped ≤ 1; student machine unit: 10,000 hours, crashes, and the fault dropped ≤ 1;Terminal time you start the success rate of 100%;Conditions of Use: -10-45 °C; Relative Humidity: 20% -80%; atmospheric pressure 86-106Kpa; system power supply 220V ± 22V AC voltage; Power frequency: 50 ± 2.5Hz.
Digital audio exchange host	Of 128 44.1Khz/16bit audio data transmission, voice delay <1ms;Access to power supply: standard 220V ± 22V power supply, output voltage: 9V, intelligent switches, all the students to terminal power exchanged by audio host unified;SNR> 80dB, distortion <1%;Three-in-one network port (including power supply, control, communication, data exchange, high-definition VGA signal (optional)).
Digital student terminal	Continuously variable transmission to the same tune: 50% - +200%;SNR> 80dB;Frequency Response: 125Hz-10.0kHz (± 2dB), more than 16-bit linear sampling;The recording time ≥ 600 minutes;Direct drive VGA color LCD screen display (optional);Three-in-one network port (including the feed, data communications, high-definition VGA signal)
Headset microphone group  (two-channel stereo)	Headphones:Frequency Response: 125Hz ~ 8000 Hz, ± 17 dB (0dB =    20uPa The) (input power = 1mW);Electrical Impedance: 32Ω ± 20%;The characteristics of sound pressure level (sensitivity): the ≥ 100dB/1mW (0dB = 20uPa The).Microphone:Frequency response :40-20000HZType: electrets microphone;Free field sensitivity: -47 ± 2 dB (0 dB = 1V/Pa);Directional type; two-way.
Sound delay	Broadcast ≤ 1ms;Intercom ≤ 1ms;Breaking time: None.
Network	Adaptive multi-channel digital audio real-time packet transmission protocol, and audio transmission optimization;Triple-play network mode, the audio exchange host to students through a standard UTP cable terminal power supply, data transmission, transfer high-definition VGA signal.

The picture of GD5110B

 

digital language lab GD5110B