如何访问当前系统音频声音以查看实际音量?

时间:2012-06-07 15:49:32

标签: c# audio volume

我需要获得正在Windows 7系统上播放的实际级别的音频,就像skype在设置中所做的那样:

skype settings http://img96.imageshack.us/img96/1497/sdgsgsdgsgd.png

我发现没关系,这里的任何人都可以帮助我吗?

我想要做的是,我想写一个简单的工具,如果窗户上的声音过于颤动,将会调高音量,如果声音太大,则会调高音量。

2 个答案:

答案 0 :(得分:0)

您可以尝试以下链接:

http://www.dreamincode.net/forums/topic/45693-controlling-sound-volume-in-c%23/

基本上,你需要导入这个win32 api函数:

[DllImport("winmm.dll")]
public static extern int waveOutGetVolume(IntPtr hwo, out uint dwVolume);

那么你就可以这样使用它:

waveOutGetVolume(IntPtr.Zero, out CurrVol);

你将获得'CurrVol'的音量水平

答案 1 :(得分:0)

下载类NAudio并在C#项目中引用DLL。

然后将以下代码添加到项目中。 它将枚举所有音频设备获得其音量级别并尝试将其静音。

        try
        {
            //Instantiate an Enumerator to find audio devices
            NAudio.CoreAudioApi.MMDeviceEnumerator MMDE = new NAudio.CoreAudioApi.MMDeviceEnumerator();
            //Get all the devices, no matter what condition or status
            NAudio.CoreAudioApi.MMDeviceCollection DevCol = MMDE.EnumerateAudioEndPoints(NAudio.CoreAudioApi.DataFlow.All, NAudio.CoreAudioApi.DeviceState.All);
            //Loop through all devices
            foreach (NAudio.CoreAudioApi.MMDevice dev in DevCol)
            {
                try
                {
                    //Get its audio volume
                    System.Diagnostics.Debug.Print("Volume of " + dev.FriendlyName + " is " + dev.AudioEndpointVolume.MasterVolumeLevel.ToString());

                    //Mute it
                    dev.AudioEndpointVolume.Mute = true;
                    System.Diagnostics.Debug.Print(dev.FriendlyName + " is muted");

                    //Get its audio volume
                    System.Diagnostics.Debug.Print(dev.AudioEndpointVolume.MasterVolumeLevel.ToString());
                }
                catch (Exception ex)
                {
                    //Do something with exception when an audio endpoint could not be muted
                    System.Diagnostics.Debug.Print(dev.FriendlyName + " could not be muted");
                }
            }
        }
        catch (Exception ex)
        {
            //When something happend that prevent us to iterate through the devices
            System.Diagnostics.Debug.Print("Could not enumerate devices due to an excepion: " + ex.Message);
        }