XAudio2CutoffFrequencyToRadians function (xaudio2.h)

Inline function that converts from filter cutoff frequencies expressed in hertz to the radian frequency values used in the Frequency member of the XAUDIO2_FILTER_PARAMETERS structure.

Syntax

float XAudio2CutoffFrequencyToRadians(
  [in] float  CutoffFrequency,
  [in] UINT32 SampleRate
);

Parameters

[in] CutoffFrequency

The cutoff frequency in hertz. Frequencies greater than SampleRate ÷ 6 are clamped to XAUDIO2_MAX_FILTER_FREQUENCY.

[in] SampleRate

The sample rate of the audio data affected by the XAUDIO2_FILTER_PARAMETERS structure.

Return value

Returns a radian frequency for use in the XAUDIO2_FILTER_PARAMETERS structure.

Remarks

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

Platform Requirements

Requirements

See also

XAudio2 Functions