function beep(freq = 660, duration = 90, vol = 50) { var context = new(window.AudioContext || window.webkitAudioContext); const oscillator = context.createOscillator(); const gain = context.createGain(); gain.gain.setValueAtTime(0, context.currentTime); gain.gain.linearRampToValueAtTime(1, context.currentTime + 0.002); oscillator.connect(gain); oscillator.frequency.value = freq; oscillator.type = "square"; gain.connect(context.destination); oscillator.start(context.currentTime); oscillator.stop(context.currentTime + duration * .001); oscillator.onended = () => context.close(); } <br> <center><button onclick="beep()">Beep!</button></center>

以下是我如何使用HTML5让它发出哔哔声: 首先我复制并将windows wav文件转换为mp3，然后我使用以下代码:

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

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

全局声明声音文件并在需要时引用它会更快。

我用新的音频API写了一个函数来发出哔哔声。

var beep = (function () {
    var ctxClass = window.audioContext ||window.AudioContext || window.AudioContext || window.webkitAudioContext
    var ctx = new ctxClass();
    return function (duration, type, finishedCallback) {

        duration = +duration;

        // Only 0-4 are valid types.
        type = (type % 5) || 0;

        if (typeof finishedCallback != "function") {
            finishedCallback = function () {};
        }

        var osc = ctx.createOscillator();

        osc.type = type;
        //osc.type = "sine";

        osc.connect(ctx.destination);
        if (osc.noteOn) osc.noteOn(0); // old browsers
        if (osc.start) osc.start(); // new browsers

        setTimeout(function () {
            if (osc.noteOff) osc.noteOff(0); // old browsers
            if (osc.stop) osc.stop(); // new browsers
            finishedCallback();
        }, duration);

    };
})();

jsFiddle。

根据Houshalter的建议，我制作了这个简单的音调合成器演示。

截图

这是一个截图。在下面的答案中尝试现场演示(单击运行代码片段)。

演示代码

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>

你可以在这里克隆和调整代码: 音调合成器的演示JS Bin

玩得开心!

兼容的浏览器:

Chrome手机和桌面 移动和桌面Firefox Opera移动，迷你和桌面 Android浏览器 微软Edge浏览器 iPhone或iPad上的Safari浏览器

不兼容的

Internet Explorer 11版(但在Edge浏览器上可以运行)

该代码支持多个哔哔声的排序，以及频率的逐渐变化('ramp'标志)。下面给出了两个例子。

<script>
var audioContext = null;
var oscillatorNode = null;
var stopTime = 0;

function beep (frequency, durationSec, ramp=false)
{
    if (oscillatorNode == null) {
        audioContext = new (window.AudioContext || window.webkitAudioContext) ();
        stopTime = audioContext.currentTime;

        oscillatorNode = audioContext.createOscillator();
        oscillatorNode.type = "sine";
        oscillatorNode.connect (audioContext.destination);
        if (ramp) {
            oscillatorNode.frequency.setValueAtTime (frequency, stopTime);
        }
        oscillatorNode.start ();
        oscillatorNode.onended = function() {
            oscillatorNode = null;
            audioContext = null;
        }
    }

    if (ramp) {
        oscillatorNode.frequency.linearRampToValueAtTime (frequency, stopTime); // value in hertz
    } else {
        oscillatorNode.frequency.setValueAtTime (frequency, stopTime);  // value in hertz
    }

    stopTime += durationSec;
    oscillatorNode.stop (stopTime);
}
function test1()
{
        beep (250, 0.5);
        beep (1000, 0.2);
        beep (550, 0.5);
}
    
function test2()
{
        beep (50, 2, true);
        beep (5000, 2, true);
        beep (50, 0, true);
}
</script>
    
<button onclick='test1()'>Beep!</button>
<button onclick='test2()'>Beep(ramped)!</button>

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();
    }
}

适用于Chrome,IE,Mozilla使用Win7操作系统。 需要服务器上的beep.wav文件。