C#获取设备话筒主峰值，实时音频输出分贝量

1.引用类库NAudio，Git地址 https://github.com/naudio/NAudio

2.添加如下代码和引用：

public float GetVoicePeakValue()

{

var enumerator = new MMDeviceEnumerator();

var CaptureDevices = enumerator.EnumerateAudioEndPoints(DataFlow.Capture, DeviceState.Active).ToArray();

var defaultDevice = enumerator.GetDefaultAudioEndpoint(DataFlow.Capture, Role.Console);

var selectedDevice = CaptureDevices.FirstOrDefault(c => c.ID == defaultDevice.ID);

return selectedDevice.AudioMeterInformation.MasterPeakValue;

}