tts

var synth = window.speechSynthesis;
var readIncoming = true; readOutgoing = true;
var silent = true;
window.speakrate = 3;
window.speakpitch = 1.3;
window.speakvoice = undefined;//synth.getVoices()[0];
var prevMessages=[];
window.speak=function(text,store,force){
    if(store){
        prevMessages.push(text);
        if(prevMessages.length>100)
            prevMessages=prevMessages.slice(1);
    }
    if (!silent && readIncoming || force){
        var utterThis = new SpeechSynthesisUtterance(text.replace(/_/g," "));
        utterThis.rate = speakrate;
        utterThis.pitch = speakpitch;
        utterThis.voice = speakvoice;
        synth.speak(utterThis);

    }
}

commands.push(new Command("tts", function(){
   silent = !silent;
   speak("reader is now " + (silent ? "off" : "on") + ". use /TTS help for help",false,true);
}));

commands.push(new Command("ttsread", function(){
   readIncoming = !readIncoming;
   speak("incoming message reading is now " + (readIncoming ? "on" : "off") + ". use /TTS help for help",false,true);
}));

commands.push(new Command("ttsrate", function(param){
   window.speakrate = param.substr(1);
   speak("tts speed is now" + window.speakrate);
}));

commands.push(new Command("ttspitch", function(param){
   window.speakpitch = param.substr(1);
   speak("tts pitch is now" + window.speakpitch);
}));

commands.push(new Command("re", function(param){
   n = param.substr(1)||1;
   speak(prevMessages[prevMessages.length-n]);
}));