Data type: PtypBinary ([MS-OXCDATA] section 2.11.1)

The PidTagSpokenName property<33> ([MS-OXPROPS] section 2.1013), if present, MUST contain an Advanced Systems Format binary media object, as specified in [ASF] section 9.5, that contains a recording of the mail user's name pronunciation. The major media type MUST be set to 73647561-0000-0010-8000-00AA00389B71, the media subtype MUST be set to 00000001-0000-0010-8000-00AA00389B71, and the format type MUST be set to 05589f81-c356-11ce-bf01-00aa0055595a.