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

VOICE_POSITIONAL_SECONDS_AFTER_DEATH

CS:GO

This command sets the amount of seconds that players will have positional voices for after death - i.e. a player can speak from their dead body for this amount of seconds after being killed/dying.

Syntax
voice_positional_seconds_after_death [Seconds]

Description

This command sets the amount of seconds that players will have positional voices for after death - i.e. a player can speak from their dead body for this amount of seconds after being killed/dying.

Syntax And Arguments

voice_positional_seconds_after_death [Seconds]
Seconds The amount of time, in seconds, that players can speak for after death (when voice_positional is enabled).