layui_back/back/assets/EZUIKit/js/talk/recoder.js

var audio_context;
var recorder;

function startUserMedia(stream) {
    var input = audio_context.createMediaStreamSource(stream);
    recorder = new Recorder(input);
}

function startRecording(button) {
    recorder && recorder.record();
    // button.disabled = true;
    // button.nextElementSibling.disabled = false;
}

function stopRecording(button) {
    recorder && recorder.stop();
    // button.disabled = true;
    // button.previousElementSibling.disabled = false;
    createAudioDom();

    recorder.clear();
}

function voiceInit() {
    console.log("run init")
    try {
        // webkit shim
        window.AudioContext = window.AudioContext || window.webkitAudioContext;
        navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia;
        window.URL = window.URL || window.webkitURL;

        audio_context = new AudioContext;
        console.log('Audio context set up.');
        console.log('navigator.getUserMedia ' + (navigator.getUserMedia ? 'available.' : 'not present!'));
    } catch (e) {
        console.log("err", e)
        // layer.msg('No web audio support in this browser!');
    }

    navigator.getUserMedia({audio: true}, startUserMedia, function (e) {
        console.log('No live audio input: ' + e);
        //  layer.msg('浏览器未找到麦克风');
    });
};

function createAudioDom() {
    // recorder && recorder.exportWAV(function (blob) {
    //     var url = URL.createObjectURL(blob);
    //     var au = document.createElement('audio');

    //     au.controls = true;
    //     au.src = url;
    //     document.body.appendChild(au);
    // });
}

function wavUpload() {
    try {
        recorder && recorder.stop();
        createAudioDom();

        recorder && recorder.exportWAV(function (wav_file) {
            console.log("wav_file", wav_file);
            if (wav_file.size < 1000) {
                layer.msg("录音失败，请重试");
                recodeTime = 0;
                return false;
            }
            var formdata = new FormData(); // form 表单 {key:value}
            formdata.append("voiceFile", wav_file); // form input type="file"
            formdata.append("accessToken", accessToken);
            formdata.append("deviceSerial", deviceSerial);
            formdata.append("channelNo", channelNo);
            padding = true;

            $.ajax({
                url: "/api/lapp/voice/sendonce",
                type: 'post',
                processData: false,
                contentType: false,
                data: formdata,
                dataType: 'json',
                success: function (data) {
                    console.log(data);
                    if (data.code == '200') {
                        countTime('sub', recodeTime + 2); // 延时
                    } else if (data.code == "111001") {
                        return false;
                    } else {
                        if (recodeTime !== 0) { // 仅需提示过短外其他错误
                            layer.msg(data.msg || '发送失败，请稍后再试')
                        }
                    }
                    //ocument.getElementById("player").src = "/get_audio/" + data.filename;
                    padding = false;
                    recodeTime = 0;
                },
                error: function (err) {
                    console.log("err", err);
                    padding = false;
                    recodeTime = 0;
                    layer.msg("网络异常，请稍后再试");
                }
            })
        });
        recorder && recorder.clear();
    } catch (err) {
        console.log(err);
    }
}