XAudio2DecibelsToAmplitudeRatio function (xaudio2.h)

Inline function that converts a decibel value to an amplitude ratio value.

Syntax

float XAudio2DecibelsToAmplitudeRatio(
  [in] float Decibels
);

Parameters

[in] Decibels

Floating point value representing the decibel level.

Return value

Returns a floating point value that represents the amplitude ratio.

Remarks

This function can be used to calculate the Volume parameter value passed to the IXAudio2Voice::SetVolume function.

You must explicitly define XAUDIO2_HELPER_FUNCTIONS in your build for this function to become available.

Platform Requirements

Windows 10 (XAudio2.9); Windows 8, Windows Phone 8 (XAudio 2.8); DirectX SDK (XAudio 2.7)

Requirements

Requirement	Value
Target Platform	Windows
Header	xaudio2.h

See also

XAudio2 Functions