在处理微信语音中它的音频是amr格式、但是在普通的audio中是不能播放的
在下面有两种方法 js外链接引入/npm引入。

// 如果是vue项目 则npm引入
npm install benz-amr-recorder

let BenzAMRRecorder = require('benz-amr-recorder');  //引入
this.amr = null;
this.amr = new BenzAMRRecorder();    //创建
this.amr.initWithUrl(data.audios[0].url);   //初始化
this.amrTime.duration = data.audios[0].duration / 1000;  //音频总时长
this.amr.play()  //播放
this.amr.stop() //停止

// 如果是h5中的项目 则引入外链接amr.js
let url="xxxxxxxxx.amr"
let gAudioContext = new AudioContext();
function getAudioContext() {
    if (!gAudioContext) {
        gAudioContext = new AudioContext();
    }
    return gAudioContext;
}
//开始播放
window.playAmr = function (url) {
    fetchBlob(amrUrl, function (blob) {
        playAmrBlob(blob);
    });
};
function fetchBlob(url, callback) {
    let xhr = new XMLHttpRequest();
    xhr.open('GET', url);
    xhr.responseType = 'blob';
    xhr.onload = function () {
        callback(this.response);
    };
    xhr.onerror = function () {
        alert('Failed to fetch ' + url);
    };
    xhr.send();
}
function readBlob(blob, callback) {
    const reader = new FileReader();
    reader.onload = function (e) {
        const data = new Uint8Array(e.target.result);
        callback(data);
    };
    reader.readAsArrayBuffer(blob);
}
function playAmrBlob(blob, callback) {
    readBlob(blob, function (data) {
        playAmrArray(data);
    });
}
function playAmrArray(array) {
    const samples = AMR.decode(array);
    if (!samples) {
        alert('播放失败，请下载后播放!');
        return;
    }
    playPcm(samples);
}
let preCtx = null;
function playPcm(samples) {
    if (preCtx !== null) {
        stopPlay();
    }
    const ctx = getAudioContext();
    const src = ctx.createBufferSource();
    const buffer = ctx.createBuffer(1, samples.length, 8000);
    if (buffer.copyToChannel) {
        buffer.copyToChannel(samples, 0, 0);
    } else {
        const channelBuffer = buffer.getChannelData(0);
        channelBuffer.set(samples);
    }
    src.buffer = buffer;
    src.connect(ctx.destination);
    src.start();
    preCtx = src;
}
//停止播放
function stopPlay() {
    if (preCtx !== null) {
        preCtx.stop();
    }
    preCtx = null;
}

//调用playAmr() 就可播放音频