I have seen this going up and down the internet that a lot of people think that the console command voice_scale is the mic volume, but it's not.

1% of the people (including me) are complaining about this by saying "voice_scale is not a mic volume" or "voice_scale was intended to be the mic volume".

My thought to voice_scale not being a mic volume however...

https://www.youtube.com/watch?v=ptO8BXN3BVE

The definition of voice_scale and I quote...

引用自 Emerik1995：

voice_scale is a developer console command that being used in Options>Voice for Valve games like Team Fortress 2, by adjusting the voice received volume for receiving voice chat to one player from the others and not voice transmit volume.

And what does voice_scale do? A configuration of receiving voice chat to one player from the others for better gaming strategy and communication for everyone to hear and understandable.