Warning: This property is deprecated. Deprecated components of Microsoft DirectX 9.0 for Managed Code are considered obsolete. While these components are still supported in this release of DirectX 9.0 for Managed Code, they may be removed in the future. When writing new applications, you should avoid using these deprecated components. When modifying existing applications, you are strongly encouraged to remove any dependency on these components.
Pointer to an IDirectSoundBuffer8 object, which is used to create the Microsoft® DirectPlay® Voice main buffer. This can be either NULL or a user-created Microsoft DirectSound® buffer. If this member is set to NULL, Microsoft® DirectPlay® Voice will create a buffer for the main voice buffer. If users specify a buffer here, Microsoft® DirectPlay® Voice will use their buffer for the main voice buffer. User-created buffers have the following restrictions. Deprecated.