*C#. SAPI 5 Microsoft Sam, Mike and Mary say C number sign. Speakonia voices pronounce it "C number". Microsoft Anna, David, Zira, Mark and Eva say it correctly. | *C#. SAPI 5 Microsoft Sam, Mike and Mary say C number sign. Speakonia voices pronounce it "C number". Microsoft Anna, David, Zira, Mark and Eva say it correctly. |