SPEEX_GET_RELATIVE_QUALITY
SPEEX_GET_SUBMODE_ENCODING
SPEEX_GET_VBR_MAX_BITRATE
SPEEX_LIB_GET_EXTRA_VERSION
SPEEX_LIB_GET_MAJOR_VERSION
SPEEX_LIB_GET_MICRO_VERSION
SPEEX_LIB_GET_MINOR_VERSION
SPEEX_LIB_GET_VERSION_STRING
SPEEX_SET_SUBMODE_ENCODING
SPEEX_SET_VBR_MAX_BITRATE
SPEEX_SUBMODE_BITS_PER_FRAME