Audio Radar will pick up any audio that runs through it, including voices from your teammates in voice chat.
This means that the light bars will activate to any sounds, including conversations from your teammates.
In most games, you have the option to turn off voice chat if you prefer the light bars to only react to in-game sounds. Check your game’s audio settings to disable voice chat and minimize unnecessary light bar activations.
Check out this article for removing Discord from Audio Radar: How to Separate Discord from Audio Radar using Voicemeeter Banana
Check out these other articles:
How to Setup Voicemeeter Settings
Do your in-game footsteps activate the light bars?
What factors in the gaming environment might affect the performance of Audio Radar?