HTML5声音录制和播放功能的实现-

html代码：

HZRecorder.js

(function (window) {
    //兼容
    window.URL = window.URL || window.webkitURL;
    navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
    var HZRecorder = function (stream, config) {
        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 = context.createMediaStreamSource(stream);
        var createScript = context.createScriptProcessor || context.createJavascriptNode;
        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 
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