Product introduction

Longsea DLSN8000 series is a digital network language learning system with both software and hardware. It loads software and main control hardware without any change to the already built PC room. Besides maintaining the function of previous PC room, it equips with specialized language teaching function, such as audio and video broadcast, self-study and digital exam,etc. It uplifts students' study interesting, improving students' comprehensive capability of English listening, speaking, reading and writing, releasing teacher's workload and saving classroom and fund for school.
At the same time, it solves the malpractice of easy to halt for pure software product sharing system, voice distortion, multi-line movement not stable and easy to conflict and incompatible of multi-software performance. In addition, it suits for various learning environment, especially for the foreign language learning environment based on self-study.

Product picture

Multi-media telecasts control
Language teaching operation
Size: 1294(W)¡Á780(D)¡Á775(H) Weight£º53.5kg

Main control console

Embedded PC processing, operation system Windows CE
AV processing equipment, audio signal analogue digitalize.
Size: 400(D)¡Á280(W)¡Á140(H)   Weight£º4.00kg

Main control box of language laboratory

LCD; Japanese e-control logic chip; Sentence repeat function, Language editing; Control track play; Free, randam exam function
4-channel program selection, 5 points bookmark
Size: 186(D)¡Á336(W)¡Á140(H) Weight: 2.35kg

Record cassette

24 Port Standard Ethernet switching machine.

Meet the standard of IEEE 802.3¡¢IEEE 802.3u; 24 pcs 10/100M suit for RJ45 port; Support port auto rotating£¨Auto MDI/MDIX£©

Network switching machine

All wooden construction, density board, twin-seat.
The thickness is 16mm.
Size£º1400(D)¡Á600(W)¡Á1100(H)

Student booth
Product function

Main Features of Control Console

Speak to all

Intercom between teacher and student

Classware-make

Real-time record

Volume control

Audio broadcasting

Audio and text simultaneous broadcasting

Audio multicasting

Text broadcasting

Text multicasting

Grouping

SP play

Variable speed play without tone changed

Model voice

Network browsing

Program pre-listen

Monitor to student PC

Login

ID confirm

SP

AOD

Text and audio demand

Listening selection

Oral exam

Reading selection

Teacher screen broadcasting

Video broadcasting

Simultaneous interpretation

Dematerialized exam

 

 

 

Student terminal function requirement (Basic requirement of language lab)

Audio program selection & listening

Volume control

AOD function

Bookmark setting

Audio loop playing

Call

Variable speed play without tone changed

Listening exam ¡¢Oral exam

Read exam

Video program display

VOD function

Word input

Text on demand

Access to resourse bank of campus network

Access internet

Word input & edit

Enhanced function (Exceeds the basic requirement)

Exam analysis

Intelligent marking

4/6 band emulational exam

Management to resource bank

English chat

Repeat, SP, contrast

Monitor to student PC

Multi-Classroom link and management

Remote control to student PCs

Centralized start and closure for student PCs

System intelligent upgrade

Network diagnosis and management

Charge function

Classware making and management

Data lead-in

 

Unique Function

E-message; E-board

Tape editing function

DVD playing function

16-student simultaneous interpretation

10 bookmarks setting

PC lock

 

 
Technical Specification

Matching all the functions and requirements for category A stipulated in the Chinese standard of "Digital language lab technical standard"
Network: Accordant with standard IP protocol, adopt fast Ethernet switching machine to connect equipment, teacher control machine and resource.
Server: 100M or 1000M Ethernet.
Student terminal: Standard PC and 100M Ethernet
Frequency response:
File play on demand: 125-16KHz
Teacher broadcasting: 125-16KHz
Intercom: 125-16KH z
Sampling frequency: 63Hz¡ª20.05Khz
Time lag: Broadcast: <10ms
Intercom: <10ms
Headset frequency response: 20-20KHz
Headset impedance: 32¦¸
Headset sensitivity >108db
Microphone frequency response: 200-5KHz
Microphone sensitivity -42db
Directivity: single direction
Voice distortion ¡Ü1ms
Voice cross attenuation: ¡Ý60dB in rated frequency range.

Standard configuration

No.

Equipment Name

Manufacturer

Function

QTY.

Unit

1

Teacher control PC

Domestic Brand

current popular configuration.

1

Set

2

Teaching system software

Longsea

Language lab system control software and server software

1

Set

3

Record cassette

Longsea

Play tape resource and edit tape

2

Set

4

Language lab control box

Longsea

video-audio signal control and specialized processing equipment

1

Set

5

Teacher main control desk

Domestic

Teacher platform, and the size is provided by us.

1

Piece

6

Swivel chair

Domestic

Teacher's chair

1

Piece

7

Network switching machine

Domestic

Standard Ethernet switching machine. 24 port,100M

3

Set

8

Network Line

Domestic

Twisted pair line

2

Carton

9

Student PC

Domestic

General config in the market

64

Set

10

Student video control cassette

Longsea

Realize video broadcasting from teacher terminal to student by hardware.

64

Set

11

Student software

Longsea

The language teaching software installed in the student PC.

64

Set

12

Headset and microphone

Longsea

The headset and microphone used by teacher and student

65

Piece

13

Student booth

Domestic

Language lab pair-seat, and the size is provided by us.

32

Piece

14

Transportation

Longsea

Handled by us or agent

1

Set

Remark: In "Manufacturer" of the config table, "Longsea" stands for equipment produced by our company and other equipments can be bought by user or agent in the market. According to the user's requirement, you can add multi-media equipment, such as sound box function, projection,etc.