Come faccio a fare un segnale acustico JavaScript?


Answers

Soluzione

Ora puoi usare i file base64 per produrre suoni quando vengono importati come URI di dati . La soluzione è quasi la stessa di quelle precedenti, tranne che non è necessario importare un file audio esterno.

function beep() {
    var snd = new Audio("data:audio/wav;base64,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");  
    snd.play();
}
beep();

Compatibilità

L'URI dei dati è ora supportato su quasi tutti i browser. Ulteriori informazioni su http://caniuse.com/datauri

dimostrazione

http://jsfiddle.net/7EAgz/

Question

Voglio che la mia pagina web emetta un segnale acustico ogni volta che un utente supera il limite massimo di caratteri del mio <textarea> .




Usando i CSS puoi farlo se aggiungi il seguente stile a un tag, ma avrai bisogno di un file wav :

<style type="text/css">
        .beep {cue: url("beep.wav") }
</style>

var body=document.getElementByTagName("body");
body.className=body.className + " " + "beep";



Usando il suggerimento di Houshalter , ho realizzato questa semplice demo per sintetizzatore di toni.

Immagine dello schermo

Ecco uno screenshot. Prova la demo dal vivo più in basso in questa risposta (fai clic su Esegui snippet di codice ).

Codice demo

audioCtx = new(window.AudioContext || window.webkitAudioContext)();

show();

function show() {
  frequency = document.getElementById("fIn").value;
  document.getElementById("fOut").innerHTML = frequency + ' Hz';

  switch (document.getElementById("tIn").value * 1) {
    case 0: type = 'sine'; break;
    case 1: type = 'square'; break;
    case 2: type = 'sawtooth'; break;
    case 3: type = 'triangle'; break;
  }
  document.getElementById("tOut").innerHTML = type;

  volume = document.getElementById("vIn").value / 100;
  document.getElementById("vOut").innerHTML = volume;

  duration = document.getElementById("dIn").value;
  document.getElementById("dOut").innerHTML = duration + ' ms';
}

function beep() {
  var oscillator = audioCtx.createOscillator();
  var gainNode = audioCtx.createGain();

  oscillator.connect(gainNode);
  gainNode.connect(audioCtx.destination);

  gainNode.gain.value = volume;
  oscillator.frequency.value = frequency;
  oscillator.type = type;

  oscillator.start();

  setTimeout(
    function() {
      oscillator.stop();
    },
    duration
  );
};
frequency
<input type="range" id="fIn" min="40" max="6000" oninput="show()" />
<span id="fOut"></span><br>
type
<input type="range" id="tIn" min="0" max="3" oninput="show()" />
<span id="tOut"></span><br>
volume
<input type="range" id="vIn" min="0" max="100" oninput="show()" />
<span id="vOut"></span><br>
duration
<input type="range" id="dIn" min="1" max="5000" oninput="show()" />
<span id="dOut"></span>
<br>
<button onclick='beep();'>Play</button>

È possibile clonare e modificare il codice qui: demo del sintetizzatore di toni su JS Bin

Divertiti!

Browser compatibili:

  • Chrome mobile e desktop
  • Firefox mobile e desktop
  • Opera mobile, mini e desktop
  • Browser Android
  • Browser Microsoft Edge
  • Safari su iPhone o iPad

Non compatibile

  • Internet Explorer versione 11 (ma funziona con il browser Edge)



function Sound(url, vol, autoplay, loop)
{
    var that = this;

    that.url = (url === undefined) ? "" : url;
    that.vol = (vol === undefined) ? 1.0 : vol;
    that.autoplay = (autoplay === undefined) ? true : autoplay;
    that.loop = (loop === undefined) ? false : loop;
    that.sample = null;

    if(that.url !== "")
    {
        that.sync = function(){
            that.sample.volume = that.vol;
            that.sample.loop = that.loop;
            that.sample.autoplay = that.autoplay;
            setTimeout(function(){ that.sync(); }, 60);
        };

        that.sample = document.createElement("audio");
        that.sample.src = that.url;
        that.sync();

        that.play = function(){
            if(that.sample)
            {
                that.sample.play();
            }
        };

        that.pause = function(){
            if(that.sample)
            {
                that.sample.pause();
            }
        };
    }
}

var test = new Sound("http://mad-hatter.fr/Assets/projects/FreedomWings/Assets/musiques/freedomwings.mp3");
test.play();

http://jsfiddle.net/sv9j638j/




function beep(wavFile){
    wavFile = wavFile || "beep.wav"
    if (navigator.appName == 'Microsoft Internet Explorer'){
        var e = document.createElement('BGSOUND');
        e.src = wavFile;
        e.loop =1;
        document.body.appendChild(e);
        document.body.removeChild(e);
    }else{
        var e = document.createElement('AUDIO');
        var src1 = document.createElement('SOURCE');
        src1.type= 'audio/wav';
        src1.src= wavFile;
        e.appendChild(src1);
        e.play();
    }
}

Funziona su Chrome, IE, Mozilla utilizzando il sistema operativo Win7. Richiede un file beep.wav sul server.




Ecco come ottengo il segnale acustico usando HTML5: prima copio e converto il file Windows Wav in mp3, quindi uso questo codice:

var _beep = window.Audio("Content/Custom/Beep.mp3")

function playBeep() { _beep.play()};

È più veloce dichiarare globalmente il file audio e fare riferimento ad esso se necessario.




La risposta più alta era corretta al momento, ma ora è sbagliata; puoi farlo in puro javascript. Ma l'unica risposta usando javascript non funziona più, e le altre risposte sono piuttosto limitate o non usano puro javascript.

Ho creato la mia soluzione che funziona bene e ti consente di controllare il volume, la frequenza e il tipo di onda.

//if you have another AudioContext class use that one, as some browsers have a limit
var audioCtx = new (window.AudioContext || window.webkitAudioContext || window.audioContext);

//All arguments are optional:

//duration of the tone in milliseconds. Default is 500
//frequency of the tone in hertz. default is 440
//volume of the tone. Default is 1, off is 0.
//type of tone. Possible values are sine, square, sawtooth, triangle, and custom. Default is sine.
//callback to use on end of tone
function beep(duration, frequency, volume, type, callback) {
    var oscillator = audioCtx.createOscillator();
    var gainNode = audioCtx.createGain();

    oscillator.connect(gainNode);
    gainNode.connect(audioCtx.destination);

    if (volume){gainNode.gain.value = volume;};
    if (frequency){oscillator.frequency.value = frequency;}
    if (type){oscillator.type = type;}
    if (callback){oscillator.onended = callback;}

    oscillator.start();
    setTimeout(function(){oscillator.stop()}, (duration ? duration : 500));
};

Qualcuno ha suggerito di modificarlo per notare che funziona solo su alcuni browser. Tuttavia Audiocontext sembra essere supportato su tutti i browser moderni, per quanto ne so. Non è supportato su IE, ma è stato interrotto da Microsoft. Per eventuali problemi con questo browser specifico, segnalalo.




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