IDirectSound3DBuffer8::SetConeOutsideVolume Method
[The feature associated with this page, DirectSound, is a legacy feature. It has been superseded by WASAPI and Audio Graphs. Media Casting have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Media Casting instead of DirectSound, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The SetConeOutsideVolume method sets the volume of the sound outside the outside angle of the sound projection cone.
Syntax
HRESULT SetConeOutsideVolume(
LONG lConeOutsideVolume,
DWORD dwApply
)
Parameters
- lConeOutsideVolume
Cone outside volume, in hundredths of a decibel. - dwApply
Value that specifies when the setting should be applied. This value must be one of the those shown in the following table.Value Description DS3D_DEFERRED Settings are not applied until the application calls the 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.
Return Value
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. DirectSound does not support amplification.
Requirements
Header: Declared in DSound.h.
Library: Use Dsound3d.dll.