AHK script that mutes your default microphone when you mute your speakers or have volume at zero. (RIP PowerToys' Conference Mute).

conference_mute.ahk

#Requires AutoHotkey v2.0
#SingleInstance Force

; Monitor the system for volume changes every 250ms
SetTimer(SyncOnlyDefaultDevices, 250)

SyncOnlyDefaultDevices() {
    static lastMuteState := -1
    
    try {
        ; 1. Get mute state of ONLY the system's current Default Playback device
        currentMute := SoundGetMute() 
        
        ; 2. Only act if the state has changed
        if (currentMute != lastMuteState) {
            
            ; 3. Find the Default Recording device ID and apply the mute
            ; We scan specifically for the Master component of recording devices
            Loop {
                try {
                    ; Get the name of the recording device at this index
                    devName := SoundGetName( , A_Index)
                    
                    ; Check if this device is categorized as a recording/capture device
                    ; by testing for the "Capture" component
                    try {
                        SoundSetMute(currentMute, "Capture", A_Index)
                        ; Once we successfully mute the first 'Capture' device (Default), we stop
                        break 
                    }
                } catch {
                    if (A_Index > 10) ; Safety stop after 10 devices
                        break
                }
            }
            
            lastMuteState := currentMute
        }
    }
}

I removed the "enabled/disabled" indicator because it minimized fullscreen games/programs.