asp.net - Microsoft Speech Object Library - Client or server? -

i know can use microsoft speech object library asp.net sites. depend on client, or come server? want know if client dependent @ on using macs or linux?

using system; using system.collections.generic; using system.linq; using system.web; using system.web.mvc; using speechlib; using system.threading;  namespace aries.web.controllers {     public class homecontroller : controller     {         public static spvoice speach;          public actionresult index()         {             viewbag.message = "welcome asp.net mvc!";              speach = new spvoice();             //speach.speak("this test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test ", speechvoicespeakflags.svsfdefault);             speach.speak("this test test test test test test test test test test test", speechvoicespeakflags.svsflagsasync);             //speach.waituntildone(timeout.infinite);              return view();         }          public void stop()         {             speach.pause();             speach = new spvoice();             speach.speak("stopped", speechvoicespeakflags.svsflagsasync);         }     } } 

are using object in server side code or through javascript on client?

if using on server doesn't need exist on client machines sound play on server, not client.

if using through javascript required on clients , restricted internet explorer only.