The LBT wired digital conference speaker system is a professional conference equipment that typically consists of the following core components, which may vary depending on the system's functionality and complexity:

1. Central control unit (host)

Function: The core of the system, responsible for signal processing, equipment control, and conference management.

form:

Main control machine: processes speech requests, assigns permissions, and mixes audio signals.

Digital Signal Processor (DSP): noise reduction, echo suppression, equalization adjustment.

Network switch (some systems): supports IP network transmission of audio and data.

2. Speech Unit

Chairman's Unit:

● Priority control (such as interrupting, muting other representatives).

Usually equipped with permission switching buttons.

Representative Unit:

Basic functions: speech button, microphone (with on/off indicator light), headphone jack.

Advanced models: touch screen, voting button, simultaneous interpretation channel selection.

Connection method:

Hand in hand serial connection (commonly used in wired systems, through RJ45 or dedicated interfaces).

● Independent lines (some high-end systems).

3. Audio input/output devices

Input device:

● Microphone (built-in or external).

External audio sources (such as background music devices).

Output device:

● Power amplifier and speaker (used for venue amplification).

● Recording interface (connecting recording equipment).

Simultaneous interpretation transmitter (infrared or radio frequency).

4. Simultaneous interpretation system (optional)

Translation unit: Translator machine, supporting multilingual input and channel switching.

Infrared transmitter/receiver: wirelessly transmit translated audio to representative headphones.

Channel selector: integrated into the representative unit or independent device.

5. Conference management software

Function:

Control the speaking mode (first come, first served, rotation, chairman control).

Manage the permissions of attendees and the agenda of the meeting.

Support voting and meeting minutes.

Interface: PC or touch screen control, some support remote access.

6. Cables and connecting devices

Specialized cables: shielded twisted pair cables (such as CAT5e), multi-core cables.

Interface module: a signal repeater used for expanding units or long-distance transmission.

7. Power system

● PoE power supply (some systems): Power is supplied through Ethernet cables.

● Independent power adapter: provides power to each unit or host.

8. Expansion module (optional)

Camera tracking: The linked camera automatically aligns with the speaker.

● Check in system: RFID or facial recognition check-in.

Media interface: HDMI/VGA input, supports PPT playback synchronization.

Typical System Architecture Example

Central Host → (Hand in Hand Series) → Chairman Unit → Representative Unit 1 → Representative Unit 2 →

│

∝→ Simultaneous Interpretation System

∝→ Amplifier/Speaker

└→ Manage PC (Software Control)

key features

Anti interference: Reduce noise in digital signal transmission.

Low latency: suitable for real-time discussions.

Scalable: Supports hundreds of units (requiring repeaters).

The specific designs of different brands (such as LBT, Bosch, Televic, Shure) may vary slightly, but the core components are similar.