ShackTac's ACRE Volume Control mod introduces a critical element that has been missing from ACRE until now - the ability to very easily control your in-game audibility. The effect this has on player-vs-player scenarios in particular is remarkable.
Note that this mod must be run both client- and server-side.
First, you will need to bind a key to 'Talk on Direct Channel' - found here. This mod hooks that key to activate the volume control menu - when you press it and hold it down, a slider will appear that can be adjusted by using your scroll wheel. When you release the key, it will set that volume of speaking. From left to right the settings are - Whisper, Close Contact, Normal, Loud, and Shout.
Whisper can be heard for a few meters maximum. Close contact is about half as far as 'normal'. Loud can be heard out to more than 100m, while Shout can be heard a bit further.
It is important to note that you can use the 'whisper' mode to talk on your radio when enemies are nearby without them hearing you - you will be heard clearly over the radio, while you will not be heard nearby.
That's it. It's a simple mod, with a dramatic impact on gameplay. Hope you guys enjoy it.