js-audio-recorder录音带声波图_js 录音声纹动画

<!-- 听说组件 -->
<template>
    <div class="lestening-speaking-container">
        <p class="middleSizeBlob">Type the statement that you hear.</p>
        <img style="width: 1.32rem;height:1.24rem;margin-top: .07rem;" src="../assets/images/secondary/lesting.png" alt="">
 
        <!-- <p><span>可播放次数：</span><span style="color: #4581e1;font-weight: blob;">{{ count }}</span></p> -->
        <div class="btn-trim">
            <!-- <tiny-button type="primary" :disabled="disabled" :icon="iconStartCircle" @click="Play"> Play </tiny-button> -->
            <span>{{ audioData.starTime }} / {{ audioData.endTime }}</span>
            <audio src="" :muted="audioData.muted"></audio>
        </div>
        <div class="function-box">
            <canvas id="canvas"></canvas>
            <canvas id="playChart"></canvas>
            <tiny-button :disabled="disabled" type="primary" native-type="submit" @click="nextStep"> Speaking/Stop
            </tiny-button>
        </div>
 
        <tiny-dialog-box v-model:visible="dialogData.visible" top="42%" title="音频将在倒计时结束后自动播放" width="30%">
            <span style="font-size: .14rem;font-weight: 700;">{{ dialogData.countNum }}</span>
        </tiny-dialog-box>
    </div>
</template>
<script  setup>
import { ref, reactive, onMounted } from 'vue'
import { Button as TinyButton, DialogBox as TinyDialogBox } from '@opentiny/vue'
import Recorder from 'js-audio-recorder'
const lamejs = require('lamejs')
// 子组件向父组件传参数
const emits = defineEmits(['nextQuestion'])
 
onMounted(() => {
    data.startCanvas()
    data.voice()
})
 
// 录音所需的信息
const data = reactive({
    //用于存储创建的语音对象
    recorder: new Recorder({
      sampleBits: 16,                 // 采样位数，支持 8 或 16，默认是16
      sampleRate: 48000,              // 采样率，支持 11025、16000、22050、24000、44100、48000，根据浏览器默认值，我的chrome是48000
      numChannels: 1,                 // 声道，支持 1 或 2， 默认是1
      // compiling: false,(0.x版本中生效,1.x增加中)  // 是否边录边转换，默认是false
    }),
    formData: null,
    // 控制录音动画的显示隐藏
    showAnima: false,
    mation: true,
    isHistory: true,
    soundSize: 0,
    // 录音时长
    duration: 0,
 
    //波浪图-录音
    drawRecordId: null,
    oCanvas: null,
    ctx: null,
    //波浪图-播放
    drawPlayId: null,
    pCanvas: null,
    pCtx: null,
    startCanvas() {
        //录音波浪
        data.oCanvas = document.getElementById('canvas');
        data.ctx = data.oCanvas.getContext("2d");
        //播放波浪
        data.pCanvas = document.getElementById('playChart');
        data.pCtx = data.pCanvas.getContext("2d");
    },
    drawRecord() {
        // 用requestAnimationFrame稳定60fps绘制
        data.drawRecordId = requestAnimationFrame(data.drawRecord);
 
        // 实时获取音频大小数据
        // console.log(data.recorder.getRecordAnalyseData())
        // return
        let dataArray = data.recorder.getRecordAnalyseData()
        let bufferLength = dataArray.length;
 
        // 填充背景色
        data.ctx.fillStyle = 'rgb(200, 200, 200)';
        data.ctx.fillRect(0, 0, data.oCanvas.width, data.oCanvas.height);
 
        // 设定波形绘制颜色
        data.ctx.lineWidth = 2;
        data.ctx.strokeStyle = 'rgb(0, 0, 0)';
 
        data.ctx.beginPath();
 
        var sliceWidth = data.oCanvas.width * 1.0 / bufferLength, // 一个点占多少位置，共有bufferLength个点要绘制
            x = 0;          // 绘制点的x轴位置
 
        for (var i = 0; i < bufferLength; i++) {
            var v = dataArray[i] / 128.0;
            var y = v * data.oCanvas.height / 2;
 
            if (i === 0) {
                // 第一个点
                data.ctx.moveTo(x, y);
            } else {
                // 剩余的点
                data.ctx.lineTo(x, y);
            }
            // 依次平移，绘制所有点
            x += sliceWidth;
        }
 
        data.ctx.lineTo(data.oCanvas.width, data.oCanvas.height / 2);
        data.ctx.stroke();
    },
 
    submit() { // 发送语音的方法
        data.recorder.pause() // 暂停录音
        data.timer = null
        console.log('上传录音')// 上传录音
        var formData = new FormData()
        var blob = data.recorder.getWAVBlob()//获取wav格式音频数据
        //此处获取到blob对象后需要设置fileName满足当前项目上传需求，其它项目可直接传把blob作为		  file塞入formData
        var newbolb = new Blob([blob], { type: 'audio/wav' })
        var fileOfBlob = new File([newbolb], new Date().getTime() + '.wav')
        //formData是传给后端的对象,
        formData.append('file', fileOfBlob)
        //计算出录音时长
        data.duration = Math.ceil((new Date() - data.duration) / 1000);
        console.log(data.duration);
        //发送给后端的方法
        sendAudio(formData).then(res => {
            console.log(res);
        })
    },
    // 录音按钮的点击事件
    voice() {
        //实例化语音对象
        // data.recorder = new Recorder({
        //     sampleBits: 16, // 采样位数，支持 8 或 16，默认是16
        //     sampleRate: 16000, // 采样率，支持 11025、16000、22050、24000、44100、48000，根据浏览器默认值，我的chrome是48000
        //     numChannels: 1 // 声道，支持 1 或 2， 默认是1
        // })
        //记录开始录音的时间
        data.duration = new Date();
        Recorder.getPermission().then(() => {
            console.log('开始录音')
            data.recorder.start().then(() => {
                data.drawRecord();//开始绘制图片
            }, (error) => {
                // 出错了
                console.log(`${error.name} : ${error.message}`);
            }); // 开始录音
            data.recorder.onprogress = function (params) {
                // console.log('录音时长(秒)', params.duration);
                // console.log('录音大小(字节)', params.fileSize);
                data.soundSize = params.vol
                // console.log('录音音量百分比(%)', params.vol);
                // console.log('当前录音的总数据([DataView, DataView...])', params.data);
            }
        }, (error) => {
            console.log(`${error.name} : ${error.message}`)
        })
    },
    handleStop() {
        console.log('停止录音')
        data.recorder.stop() // 停止录音
        data.mation = false;
    },
    handlePlay() {
        console.log('播放录音')
        data.recorder.play() // 播放录音
    },
    handleDestroy() {
        console.log('销毁实例')
        if (data.recorder) {
            data.recorder.destroy() // 毁实例
        }
    },
})
 
// 本地音频播放所需要的信息
const audioData = reactive({
    starTime: '00:00',
    endTime: '00:00',
    muted: true,
})
 
// 弹出层的信息
const dialogData = reactive({
    visible: false,
    countNum: 2,
})
 
// 录音和停止录音的的按钮
const disabled = ref(true)
 
// 点击按钮时触发
function nextStep() {
    emits('nextQuestion')
}
 
</script>
<style lang="scss" scoped>
.lestening-speaking-container {
    width: 100%;
    height: 100%;
    text-align: center;
    font-size: .11rem;
    border: 1px solid red;
 
    .btn-trim {
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: .1rem;
        font-weight: normal;
        height: .18rem;
        margin-top: .14rem;
 
        .tiny-button {
            width: .72rem;
            height: .18rem;
            // margin: 0 auto;
            font-size: .08rem;
            border-radius: .1rem;
            font-weight: 700;
            margin-top: .04rem;
            margin-right: .04rem;
        }
 
        ::v-deep .tiny-svg {
            width: .1rem !important;
            height: .1rem !important;
        }
    }
 
    .function-box {
        width: 5.59rem;
        height: 1.15rem;
        opacity: 1;
        background: rgba(252, 252, 252, 0.94);
        box-shadow: 0rem .01rem .03rem rgba(0, 0, 0, 0.25);
        margin: .07rem auto 0rem;
 
        #playChart,
        #canvas {
            height: .28rem;
            width: 100%;
            border: 1px solid aqua;
            margin-top: .29rem;
 
        }
 
        .tiny-button {
            width: 1.42rem;
            height: .24rem;
            margin: .21rem auto 0;
            font-size: .11rem;
            border-radius: .13rem;
        }
    }
 
    ::v-deep .tiny-dialog-box__body {
        padding-bottom: .21rem;
        text-align: center;
    }
 
    ::v-deep .tiny-dialog-box__headerbtn {
        display: none;
    }
}
</style>