NB! It seems this console command is not compatible with CS2.
Command Profile

VOICE_RESET_MUTELIST

CS:GO

This command unmutes all players who have been muted with the voice_mute command.

Syntax
voice_reset_mutelist

Description

This command unmutes all players who have been muted with the voice_mute command.

How To Use voice_reset_mutelist

  1. Enable the developer console in Counter-Strike settings.
  2. Open the console with the tilde key (~).
  3. Enter voice_reset_mutelist, replacing bracketed arguments with the value you want, then press Enter.

This legacy command is not currently listed as compatible with Counter-Strike 2.

Syntax And Arguments

voice_reset_mutelist