IDirectSound3DBuffer::SetConeOutsideVolume
The IDirectSound3DBuffer::SetConeOutsideVolume method sets the current cone outside volume for this sound buffer.
HRESULT SetConeOutsideVolume(
LONG lConeOutsideVolume,
DWORD dwApply
);
Parameters
lConeOutsideVolume
Cone outside volume for this sound buffer, in hundredths of decibels. Allowable values are between DSBVOLUME_MAX (no attenuation) and DSBVOLUME_MIN (silence). These values are defined in Dsound.h.
dwApply
Value indicating when the setting should be applied. This value must be one of the following:
| DS3D_DEFERRED | Settings are not applied until the application calls the IDirectSound3DListener::CommitDeferredSettings method. This allows the application to change several settings and generate a single recalculation. |
| DS3D_IMMEDIATE | Settings are applied immediately, causing the system to recalculate the 3-D coordinates for all 3-D sound buffers. |
Return Values
If the method succeeds, the return value is DS_OK.
If the method fails, the return value may be DSERR_INVALIDPARAM.
Remarks
Volume levels are represented by attenuation. Allowable values are between DSBVOLUME_MAX (no attenuation) and DSBVOLUME_MIN (silence). The default value is DS3D_DEFAULTCONEOUTSIDEVOLUME (no attenuation). These values are defined in Dsound.h. Currently DirectSound does not support amplification.
For information about the concept of cone outside volume, see Sound Cones.
See Also