DMUS_LFOPARAMS

The DMUS_LFOPARAMS structure defines the low-frequency oscillator for a DLS articulation chunk. It is used in the DMUS_ARTICPARAMS structure.

typedef struct {
    PCENT pcFrequency;
    TCENT tcDelay;
    GCENT gcVolumeScale;
    PCENT pcPitchScale;
    GCENT gcMWToVolume;
    PCENT pcMWToPitch;
} DMUS_LFOPARAMS;

pcFrequency

Frequency, in pitch units. See Remarks.

tcDelay

Initial delay, in time cents. See Remarks.

gcVolumeScale

Scaling of output to control tremolo, in attenuation units. See Remarks.

pcPitchScale

Scaling of LFO output to control vibrato, in pitch units. See Remarks.

gcMWToVolume

Modulation wheel range to control tremolo, in attenuation units. See Remarks.

pcMWToPitch

Modulation wheel range to control tremolo, in attenuation units. See Remarks.

Remarks

The DLS Level 1 specification defines time cents, pitch cents, and attenuation as 32-bit logarithmic values. See the specification from the MIDI Manufacturers Association for details.

Requirements

  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in dmdls.h.

See Also

DMUS_ARTICPARAMS