Download and install the latest Microsoft Speech SDK (currently it's Microsoft Speech SDK 5.1).

use Win32::OLE;

talk("Hello user.", "microsoft sam");
talk("I like you."); # microsoft mary is the default for SAPI.SpVoice
talk("Goodbye!", "microsoft mike");

sub talk {
  my $text = shift;
  my $voice = shift;
  my $speech = Win32::OLE->new("SAPI.SpVoice") or die("TTS failed");
  $speech->{voice} = $speech->GetVoices("name = $voice")->Item(0) if $
+voice;
  $speech->{rate} = -2; # speaking rate has a valid range of -10..10
  $speech->Speak($text);
}
[download]