IDirectSound3DBuffer::SetConeOutsideVolume

HRESULT SetConeOutsideVolume(

LONG lConeOutsideVolume, DWORD dwApply);

Sets the current cone outside volume for this sound buffer.

·Returns DS_OK if successful, or DSERR_INVALIDPARAM otherwise.

lConeOutsideVolume

Cone outside volume for this sound buffer, in hundredths of decibels. Allowable values are between 0 (no attenuation) and -10,000 (silence).

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 3D coordinates for all 3D sound buffers.

Volume levels are represented by attenuation. Amplification is not currently supported by DirectSound.

For additional information about the cone outside volume concept, see Sound Projection Cones.