How to Use AUX Input for Microphone Recording?¶
RecDual Dongle’s AUX port allows you to add voice commentary to your recordings using an external microphone.
AUX Port Specifications¶
Connector: 3.5mm TRRS (4-pole)
Function: Microphone input / Audio output
Compatibility: Standard 3.5mm headsets and microphones
What You Need¶
Compatible Microphones:
3.5mm lavalier (clip-on) microphones
3.5mm headsets with microphone
External microphones with 3.5mm output
Plug Type:
TRRS (4-pole) recommended
TRS (3-pole) may work for microphone-only devices
Setup Instructions¶
Step 1: Connect Microphone
Plug your microphone into the AUX port
Ensure firm connection
Step 2: Set Up Video Recording
Connect your video source (HDMI or Type-C DP)
Insert TF card
Verify LED indicators
Step 3: Position Microphone
Place at appropriate distance from your mouth
Minimize background noise
Test position before recording
Step 4: Start Recording
Press REC/STOP to begin
Speak into microphone
Audio is mixed with source audio
How Audio is Mixed¶
Automatic mixing:
Source audio (game, video, etc.) + Microphone audio
Combined into single audio track
No separate track control
Volume levels are automatic
In the recording:
Both audio sources play together
Cannot separate tracks later
Balance is hardware-determined
Use Cases¶
Gaming Commentary:
Explain strategies while playing
React to gameplay moments
Create let’s play content
Tutorial Narration:
Voice-over for screen recordings
Step-by-step instructions
Educational content
Presentation Recording:
Add verbal explanations
Record Q&A sessions
Create training materials
Tips for Best Quality¶
Microphone Positioning:
6-12 inches from mouth
Slightly off-axis to reduce plosives
Away from noise sources
Environment:
Quiet room preferred
Minimize echo and reverb
Close windows and doors
Equipment:
Use quality microphones for better clarity
Avoid very cheap microphones
Consider lavalier mics for hands-free use
Using a Headset¶
A headset provides dual functionality:
Microphone for commentary
Headphones for audio monitoring
Benefits:
Hear source audio while commenting
Single device solution
Hands-free operation
Recommended headsets:
Gaming headsets with 3.5mm plug
Smartphone-compatible headsets
Any TRRS 3.5mm headset
Limitations¶
No separate volume control for microphone
Cannot adjust mic gain on device
Audio is mixed automatically
No noise cancellation processing
Troubleshooting¶
No microphone audio in recording:
Check microphone connection
Verify microphone is not muted
Try a different microphone
Ensure using TRRS plug if required
Audio quality is poor:
Use better quality microphone
Reduce background noise
Check cable connections
Position microphone closer