How to use SelctVoice

I want to use 'Haruka' and 'Zira' in a Delphi program.

If we use ' CreateOleObject('SAPI.SpVoice')' ,we can't use SelectVoice().

But using 'Imports System.Speech.Synthesis' in VBnet,we can use SelectVoice().

Please show me how to use SelectVoive or ' System.Speech.Synthesis'.