/// <summary>
        /// MMDeviceの情報を標準出力へWriteLineする
        /// </summary>
        /// <param name="device"></param>
        private void PutDeviceInfo(MMDevice device)
        {
            Console.WriteLine("id={0}, State={1}", device.Id, device.State);
            Console.WriteLine("mute :" + device.AudioEndpointVolume.Mute);

            var keys = new List <PropertyKey>
            {
                PropertyKeys.PKEY_DEVICE_INTERFACE_FRIENDLY_NAME,
                PropertyKeys.PKEY_AUDIO_ENDPOINT_FORM_FACTOR,
                PropertyKeys.PKEY_AUDIO_ENDPOINT_CONTROL_PANEL_PAGE_PROVIDER,
                PropertyKeys.PKEY_AUDIO_ENDPOINT_ASSOCIATION,
                PropertyKeys.PKEY_AUDIO_ENDPOINT_PHYSICAL_SPEAKERS,
                PropertyKeys.PKEY_AUDIO_ENDPOINT_GUID,
                PropertyKeys.PKEY_AUDIO_ENDPOINT_DISABLE_SYS_FX,
                PropertyKeys.PKEY_AUDIO_ENDPOINT_FULL_RANGE_SPEAKERS,
                PropertyKeys.PKEY_AUDIO_ENDPOINT_SUPPORTS_EVENT_DRIVEN_MODE,
                PropertyKeys.PKEY_AUDIO_ENDPOINT_JACK_SUB_TYPE,
                PropertyKeys.PKEY_AUDIO_ENGINE_DEVICE_FORMAT,
                PropertyKeys.PKEY_AUDIO_ENGINE_OEM_FORMAT,
                PropertyKeys.PKEY_DEVICE_FRIENDLY_NAME,
                PropertyKeys.PKEY_DEVICE_DESCRIPTION,
                PropertyKeys.PKEY_DEVICE_ICON,
                PropertyKeys.PKEY_SYSTEM_NAME
            };

            keys.ForEach((i) => {
                var str = device.GetProperty(i);
                Console.WriteLine("\t:({0}) {1}", str.GetType(), str);
            });

            Console.WriteLine("level:" + device.AudioEndpointVolume.MasterVolumeLevelScalar);
            Console.WriteLine("mute :" + device.AudioEndpointVolume.Mute);
            Console.WriteLine("----");
        }