[wdmaudiodev] Peak Meter in Core Audio APIs

  • From: "Andrew Mindrin" <wdmaudiodev@xxxxxxxxxxxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Fri, 18 Jun 2010 06:23:43 -0400

Hi,

How to convert peak values returned by 
IAudioMeterInformation::GetChannelsPeakValues method to the range of volume
levels obtained from IAudioEndpointVolume::GetVolumeRange? I have 2 assumptions:

1. Current Volume (in dB) * Peak Value
2. Current Volume (in dB) - 20 * log10( Peak Value )

Which is the correct?

Thanks.

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