Yes, LED screens can be voice-controlled, but whether it "works" and how well it works depends mainly on the type of LED screen and control system you're using. Below, I'll explain in detail for each situation:
I. Common Ways to Control LED Screens with Voice
1️⃣ Through a Smart Voice Assistant + Control System
This is currently the most common and mature solution.
Principle:
Voice → Voice Assistant (Xiao Ai / Tmall Genie / Alexa / Siri, etc.)
→ Central Control System (Industrial PC / Smart Central Control / Server)
→ LED Control Card (e.g., Nova, Carlette, etc.)
Functions:
Turn the LED screen on/off
Switch playback content
Adjust brightness and volume
Switch scenes (e.g., "Welcome Mode / Ad Mode / Meeting Mode")
Suitable Scenarios:
Exhibition Hall
Meeting Room
Smart Office
Smart Campus
2️⃣ LED Playback Software with Built-in Voice Interface (Customized Solution)
Some customized projects will integrate a voice recognition module into the LED playback control software.
Features:
Highly customizable voice commands
Fast response
Does not rely on third-party smart speakers
Disadvantages:
High cost
Requires software development
Suitable Scenarios:
Command centers
Science and technology museums
High-end exhibition projects
3️⃣ “Voice → Computer → LED Screen”
If the LED screen plays content from a computer (HDMI output):
Implementation:
Run voice control software on the computer
Use voice to control the player/PPT/video
The LED screen is just a display terminal
Advantages:
Simple implementation
Low cost
Limitations:
Controls the “playback content,” not the underlying parameters of the LED screen
II. Which LED screens are easier to control with voice?
✅ Easy to Implement:
Indoor Full-Color LED Screen
Uses Mainstream Control Systems (Nova / Colorlight)
Network connectivity required
⚠️ Requires Evaluation:
Outdoor Advertising Screen (mainly depends on the control system)
Old Asynchronous Control Card
Screen Playback via USB Drive
III. To What Extent Can Voice Control Be Performed?
Screen On/Off ✅
Changing Programs ✅
Adjusting Brightness ✅
Targeted Playback of a Video ✅
Precise Pixel Control ❌
Real-Time Image Editing ❌
IV. Required for Implementation:
Voice Acquisition Equipment (Microphone / Smart Speaker)
Voice Recognition Platform (Local or Cloud)
Control Host / Central Control System
LED Control Card (Supports API / Network Control)