SPVPITCH

SPVPITCH contains a long value passed into an ISpVoice::Speak call using a <Pitch> XML tag. 

typedef struct SPVPITCH
{
    long   MiddleAdj;
    long   RangeAdj;
} SPVPITCH;

MiddleAdj

Value passed in with the Middle or AbsMiddle attributes. Supported values are -10 to 10 with a value of zero being the default pitch. Values outside of this range may be truncated.

RangeAdj

Reserved for future use.