DSFXParamEq Structure
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The DSFXParamEq structure contains parameters for a parametric equalizer effect.
Syntax
typedef struct DSFXParamEq {
FLOAT fCenter;
FLOAT fBandwidth;
FLOAT fGain;
} DSFXParamEq;
Members
- fCenter
Center frequency, in hertz, in the range from DSFXPARAMEQ_CENTER_MIN to DSFXPARAMEQ_CENTER_MAX. The default value is 8000. - fBandwidth
Bandwidth, in semitones, in the range from DSFXPARAMEQ_BANDWIDTH_MIN to DSFXPARAMEQ_BANDWIDTH_MAX. The default value is 12. - fGain
Gain, in the range from DSFXPARAMEQ_GAIN_MIN to DSFXPARAMEQ_GAIN_MAX. The default value is 0.
Remarks
The value in fCenter cannot exceed one-third of the sampling frequency of the buffer. If an attempt is made to set a value greater than this, but within the range of accepted values, the parameter is set to the nearest supported value and S_FALSE is returned by IDirectSoundFXParamEq8::SetAllParameters.
Requirements
Header: Declared in DSound.h.