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XAudio2SemitonesToFrequencyRatio function (xaudio2.h)

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Inline function that converts a semitone value to a frequency ratio value.

Syntax

float XAudio2SemitonesToFrequencyRatio(
  float Semitones
);

Parameters

Semitones

Floating point value representing the semitone value.

Return value

Returns a floating point value that represents the frequency ratio.

Remarks

XAudio2SemitonesToFrequencyRatio can be used to calculate the Ratio parameter value passed to the function IXAudio2SourceVoice::SetFrequencyRatio.

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