HTML5声⾳录制播放功能的实现代码html代码：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>⽕星⿊洞</title>
</head>
<body>
<div>
<audio autoplay></audio>
<input onclick="startRecording()" type="button" value="录⾳" />
<input onclick="stopRecording()" type="button" value="停⽌" />
<input onclick="playRecording()" type="button" value="播放" />
<input onclick="uploadAudio()" type="button" value="提交" />
<br />
<div id="recordingslist"></div>
</div>
<script type="text/javascript" src="js/HZRecorder.js"></script>
<script>
var recorder;
var audio = document.querySelector('audio');
function startRecording() {
<(function(rec) {
recorder = rec;
recorder.start();
}, {
sampleBits: 16,
sampleRate: 16000
});
}
function stopRecording() {
recorder.stop();
var blob = Blob();
var url = ateObjectURL(blob);
var div = ateElement('div');
var au = ateElement('audio');
var hf = ateElement('a');
au.src = url;
hf.href = url;
hf.download = new Date().toISOString() + '.wav';
hf.innerHTML = hf.download;
div.appendChild(au);
div.appendChild(hf);
recordingslist.appendChild(div);
}
function playRecording() {
recorder.play(audio);
}
function uploadAudio() {
recorder.upload("Handler1.ashx", function(state, e) {
switch(state) {
case 'uploading':
//var percentComplete = und(e.loaded * 100 / e.total) + '%';
break;
case 'ok':
//alert(sponseText);
alert("上传成功");
break;
case 'error':
alert("上传失败");
break;
case 'cancel':
alert("上传被取消");
break;
}
});
}
</script>
</body>
</html>
HZRecorder.js
(function (window) {
//兼容
window.URL = window.URL || window.webkitURL;
config = config || {};
config.sampleBits = config.sampleBits || 8      //采样数位 8, 16
config.sampleRate = config.sampleRate || (44100 / 6);  //采样率(1/6 44100)
var context = new (window.webkitAudioContext || window.AudioContext)();
var audioInput = ateMediaStreamSource(stream);
var createScript = ateScriptProcessor || ateJavaScriptNode;
var recorder = createScript.apply(context, [4096, 1, 1]);
var mp3ReceiveSuccess, currentErrorCallback;
var audioData = {
size: 0          //录⾳⽂件长度
, buffer: []    //录⾳缓存
,
inputSampleRate: context.sampleRate    //输⼊采样率
, inputSampleBits: 16      //输⼊采样数位 8, 16
, outputSampleRate: config.sampleRate    //输出采样率
, oututSampleBits: config.sampleBits      //输出采样数位 8, 16
, input: function (data) {
this.buffer.push(new Float32Array(data));
this.size += data.length;
}
, compress: function () { //合并压缩
//合并
var data = new Float32Array(this.size);
var offset = 0;
for (var i = 0; i < this.buffer.length; i++) {
data.set(this.buffer[i], offset);
offset += this.buffer[i].length;
}
//压缩
var compression = parseInt(this.inputSampleRate / this.outputSampleRate);
var length = data.length / compression;
var result = new Float32Array(length);
var index = 0, j = 0;
while (index < length) {
result[index] = data[j];
j += compression;
index++;
}
return result;
}
, encodeWAV: function () {
var sampleRate = Math.min(this.inputSampleRate, this.outputSampleRate);
var sampleBits = Math.min(this.inputSampleBits, this.oututSampleBits);
var bytes = thispress();
var dataLength = bytes.length * (sampleBits / 8);
var buffer = new ArrayBuffer(44 + dataLength);
var data = new DataView(buffer);
var channelCount = 1;//单声道
var offset = 0;
var writeString = function (str) {
for (var i = 0; i < str.length; i++) {
data.setUint8(offset + i, str.charCodeAt(i));
}
}
// 资源交换⽂件标识符
writeString('RIFF'); offset += 4;
/
/ 下个地址开始到⽂件尾总字节数，即⽂件⼤⼩-8
data.setUint32(offset, 36 + dataLength, true); offset += 4;
// WAV⽂件标志
writeString('WAVE'); offset += 4;
// 波形格式标志
writeString('fmt '); offset += 4;
// 过滤字节,⼀般为 0x10 = 16
data.setUint32(offset, 16, true); offset += 4;
// 格式类别 (PCM形式采样数据)
data.setUint16(offset, 1, true); offset += 2;
// 通道数
data.setUint16(offset, channelCount, true); offset += 2;
// 采样率，每秒样本数，表⽰每个通道的播放速度
data.setUint32(offset, sampleRate, true); offset += 4;
// 波形数据传输率 (每秒平均字节数) 单声道×每秒数据位数×每样本数据位/8
data.setUint32(offset, channelCount * sampleRate * (sampleBits / 8), true); offset += 4;                // 快数据调整数采样⼀次占⽤字节数单声道×每样本的数据位数/8
data.setUint16(offset, channelCount * (sampleBits / 8), true); offset += 2;
// 每样本数据位数
data.setUint16(offset, sampleBits, true); offset += 2;
// 数据标识符
writeString('data'); offset += 4;
// 采样数据总数，即数据总⼤⼩-44
data.setUint32(offset, dataLength, true); offset += 4;
// 写⼊采样数据
if (sampleBits === 8) {
for (var i = 0; i < bytes.length; i++, offset++) {
var s = Math.max(-1, Math.min(1, bytes[i]));
var val = s < 0 ? s * 0x8000 : s * 0x7FFF;
val = parseInt(255 / (65535 / (val + 32768)));
data.setInt8(offset, val, true);
}
} else {
for (var i = 0; i < bytes.length; i++, offset += 2) {
var s = Math.max(-1, Math.min(1, bytes[i]));
data.setInt16(offset, s < 0 ? s * 0x8000 : s * 0x7FFF, true);
}
}
return new Blob([data], { type: 'audio/wav' });
}
};
//开始录⾳
this.start = function () {
}
//停⽌
html实现用户注册登录代码this.stop = function () {
recorder.disconnect();
}
//获取⾳频⽂件
this.stop();
deWAV();
}
//回放
this.play = function (audio) {
audio.src = Blob());
}
//上传
this.upload = function (url, callback) {
var fd = new FormData();
fd.append("audioData", Blob());
var xhr = new XMLHttpRequest();
if (callback) {
xhr.upload.addEventListener("progress", function (e) {
callback('uploading', e);
}, false);
xhr.addEventListener("load", function (e) {
callback('ok', e);
}, false);
xhr.addEventListener("error", function (e) {
callback('error', e);
}, false);
xhr.addEventListener("abort", function (e) {
callback('cancel', e);
}, false);
}
xhr.open("POST", url);
xhr.send(fd);
}
//⾳频采集
audioData.input(ChannelData(0));
//record(ChannelData(0));
}
};
//抛出异常
HZRecorder.throwError = function (message) {
alert(message);
throw new function () { String = function () { return message; } }
}
//是否⽀持录⾳
HZRecorder.canRecording = (UserMedia != null);
//获取录⾳机
< = function (callback, config) {
if (callback) {
if (UserMedia) {
{ audio: true } //只启⽤⾳频
,
function (stream) {
var rec = new HZRecorder(stream, config);
callback(rec);
}
, function (error) {
switch (de || error.name) {
case 'PERMISSION_DENIED':
case 'PermissionDeniedError':
HZRecorder.throwError('⽤户拒绝提供信息。');
break;
case 'NOT_SUPPORTED_ERROR':
case 'NotSupportedError':
HZRecorder.throwError('浏览器不⽀持硬件设备。');
break;
case 'MANDATORY_UNSATISFIED_ERROR':
case 'MandatoryUnsatisfiedError':
HZRecorder.throwError('⽆法发现指定的硬件设备。');
break;
default:
HZRecorder.throwError('⽆法打开麦克风。异常信息:' + (de || error.name));
break;
}
});
} else {
HZRecorder.throwErr('当前浏览器不⽀持录⾳功能。'); return;
}
}
}
window.HZRecorder = HZRecorder;
})(window);
总结
以上所述是⼩编给⼤家介绍的HTML5声⾳录制/播放功能的实现代码，希望对⼤家有所帮助，如果⼤家有任何疑问请给我留⾔，⼩编会及时回复⼤家的。在此也⾮常感谢⼤家对⽹站的⽀持！

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