Desktop-Volume-Protector.ps1

Add-Type -TypeDefinition @"
using System.Runtime.InteropServices;
[Guid("5CDF2C82-841E-4546-9722-0CF74078229A"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IAudioEndpointVolume
{
    int f(); int g(); int h(); int i();
    int SetMasterVolumeLevelScalar(float fLevel, System.Guid pguidEventContext);
    int j();
    int GetMasterVolumeLevelScalar(out float pfLevel);
    int k(); int l(); int m(); int n();
    int SetMute([MarshalAs(UnmanagedType.Bool)] bool bMute, System.Guid pguidEventContext);
    int GetMute(out bool pbMute);
}
[Guid("D666063F-1587-4E43-81F1-B948E807363F"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IMMDevice
{
    int Activate(ref System.Guid id, int clsCtx, int activationParams, out IAudioEndpointVolume aev);
}
[Guid("A95664D2-9614-4F35-A746-DE8DB63617E6"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IMMDeviceEnumerator
{
    int f();
    int GetDefaultAudioEndpoint(int dataFlow, int role, out IMMDevice endpoint);
}
[ComImport, Guid("BCDE0395-E52F-467C-8E3D-C4579291692E")] class MMDeviceEnumeratorComObject { }
public class Audio
{
    static IAudioEndpointVolume Vol()
    {
        var enumerator = new MMDeviceEnumeratorComObject() as IMMDeviceEnumerator;
        IMMDevice dev = null;
        Marshal.ThrowExceptionForHR(enumerator.GetDefaultAudioEndpoint(/*eRender*/ 0, /*eMultimedia*/ 1, out dev));
        IAudioEndpointVolume epv = null;
        var epvid = typeof(IAudioEndpointVolume).GUID;
        Marshal.ThrowExceptionForHR(dev.Activate(ref epvid, /*CLSCTX_ALL*/ 23, 0, out epv));
        return epv;
    }
    public static float Volume
    {
        get { float v = -1; Marshal.ThrowExceptionForHR(Vol().GetMasterVolumeLevelScalar(out v)); return v; }
        set { Marshal.ThrowExceptionForHR(Vol().SetMasterVolumeLevelScalar(value, System.Guid.Empty)); }
    }
    public static bool Mute
    {
        get { bool mute; Marshal.ThrowExceptionForHR(Vol().GetMute(out mute)); return mute; }
        set { Marshal.ThrowExceptionForHR(Vol().SetMute(value, System.Guid.Empty)); }
    }
}
"@

function Set-Volume([Parameter(Mandatory=$true)][ValidateRange(0,100)][Int]$percent) {
    try {
        # Create the Windows Shell object.
        $obj = New-Object -ComObject WScript.Shell

        # Lower the volume if it's higher than the specified level.
        do {
            $obj.SendKeys([char]174) # Volume down
        } while ([Audio]::Volume -gt $percent/100)

        # Raise the volume if it's lower than the specified level.
        do {
            $obj.SendKeys([char]175) # Volume up
        } while ([Audio]::Volume -lt $percent/100)
    } catch {
        "⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
    }
}

$checkIntervalMinutes = 10 #set this to your desired interval
$highVolumeCount = 0

while ($true) {
    Start-Sleep -Seconds ($checkIntervalMinutes * 60)  # Convert minutes to seconds
    $currentVolume = [Audio]::Volume

    if ($currentVolume -gt 0.7) {
        $highVolumeCount++

        if ($highVolumeCount -ge 1) {  # Adjusted to 1 for 10 minutes interval
            Set-Volume -percent 60      #Set this to your desired volume to reduce
            $highVolumeCount = 0
        }
    } else {
        $highVolumeCount = 0
    }
}