why does function AccSetRunningUtilityState will still reduce all sounds including this window?

[jiandanfs]

import koffi from 'koffi'
const oleacc = koffi.load('oleacc.dll');
const user32 = koffi.load('user32.dll');

const DWORD = koffi.alias('DWORD', 'uint32_t');
const HANDLE = koffi.pointer(koffi.opaque('HANDLE'));
const HWND = koffi.alias('HWND', HANDLE);
const ANRUS_PRIORITY_AUDIO_ACTIVE = 0x0000004;
const ANRUS_PRIORITY_AUDIO_ACTIVE_NODUCK = 0x0000008;

const getHwnd = user32.func('HWND __stdcall GetForegroundWindow()');
const voiceChange = oleacc.func('int __stdcall AccSetRunningUtilityState(HWND hwndApp, DWORD dwUtilityStateMask, DWORD dwUtilityState)');

const hwnd = getHwnd();

ipcMain.on('voice-down', () => {
    voiceChange (hwnd, ANRUS_PRIORITY_AUDIO_ACTIVE | ANRUS_PRIORITY_AUDIO_ACTIVE_NODUCK, ANRUS_PRIORITY_AUDIO_ACTIVE | ANRUS_PRIORITY_AUDIO_ACTIVE_NODUCK)
  })
ipcMain.on('voice-up', () => {
    voiceChange(hwnd, ANRUS_PRIORITY_AUDIO_ACTIVE | ANRUS_PRIORITY_AUDIO_ACTIVE_NODUCK, ANRUS_PRIORITY_AUDIO_ACTIVE_NODUCK)
  })