Voice implementation "Computer Pronunciation" (English) a good trigger point, through it can achieve electronic novel reading, English listening test, English word learning ... The following SPEECH has made MSTTS simple packages. 1. Install MSTTS, you can hit the vtxtauto.lib file in Windows / Speech 2. Use the .NET SDK to convert vtxtAuto.tlb into .dll format: tlbimp vtxtauto.tlb / silent / namespace: MSTTS / OUT: MSTTS.DLL This time MSTTS.dll This time the MSTTS.dll has become a class of the .NET Framework running library.