| Microsoft DirectX 8.1 (C++) |
The DSFXParamEq structure contains parameters for a parametric equalizer effect.
Syntax
typedef struct _DSFXParamEq {
FLOAT fCenter;
FLOAT fBandwidth;
FLOAT fGain;
} DSFXParamEq, *LPDSFXParamEq;
Members
fCenter
Center frequency, in hertz, in the range from DSFXPARAMEQ_CENTER_MIN to DSFXPARAMEQ_CENTER_MAX. This value cannot exceed one-third of the frequency of the buffer. 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 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.
See Also