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Windows Media Audio 9 Voice Codec

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The Windows Media Audio 9 Voice encoder object is instantiated using the class identifier CLSID_CWMSPEncMediaObject2. The decoder object is instantiated using the class identifier CLSID_CWMSPDecMediaObject. Windows Media Audio 9 Voice encoded content is identified by the audio tag 0x00A.

Encoder Properties

The Windows Media Audio 9 Voice encoder object supports the following properties.

Property Description
MFPKEY_WMAVOICE_ENC_BufferWindow Specifies the buffer window value, in milliseconds, used for the voice codec.
MFPKEY_WMAVOICE_ENC_EDL Specifies the portions of content to be encoded as music by the voice codec.
MFPKEY_WMAVOICE_ENC_MusicSpeechClassMode Specifies the mode of the voice codec.

Requirements

Client: Requires Windows Vista or Windows XP.

Header: Include wmcodecdsp.h.

Library: Use wmspdmoe.dll for the encoder or wmspdmod.dll for the decoder.

See Also