这是我的申请：

using System;
using NAudio.CoreAudioApi;

namespace MaxVolume
{
    class Program
    {
        private const float DesiredLevel = -15;
        private static MMDevice _device;

        static void Main(string[] args)
        {
            MMDeviceEnumerator mmde = new MMDeviceEnumerator();
            _device = mmde.GetDefaultAudioEndpoint(DataFlow.Render,Role.Multimedia);

            _device.AudioEndpointVolume.MasterVolumeLevel = DesiredLevel;

            _device.AudioEndpointVolume.OnVolumeNotification += SetVolume;
        }

        static void SetVolume(AudioVolumeNotificationData data)
        {
            if (Math.Abs(data.MasterVolume - DesiredLevel) > 0.1)
            {
                _device.AudioEndpointVolume.MasterVolumeLevel = DesiredLevel;
            }
        }
    }
}