【小程序】语音识别 (无需转码、无需后台)
微信小程序目前录音仅能生成 mp3和acc两种格式,而百度语音识别,讯飞语音识别都不支持mp3和acc的;
最后发现腾讯云和阿里云支持mp3,反正用的是腾讯的小程序,将就着用腾讯的接口咯
不想解说了,直接说流程+代码+注释吧
准备:
1.小程序账号(appid)
2.腾讯云控制后台申请语音识别服务(获取SecretId 和SecretKey),对应代码中的马赛克,自行替换
不建议直接搬代码就用,所以多少看下接口文档吧
小程序录音接口 和 腾讯云语音识别接口
主要流程：
一、小程序录音及临时路径获取
二、根据临时读取录音文件并转换成base64编码
三、调用语音识别接口（submit()）
-
参数获取
-
加密并获取签名（需要用到hmac_sha1加密，找了挺久才找到的，在最下面）
-
发送请求
const app = getApp();
const recorder = wx.getRecorderManager();
const player = wx.createInnerAudioContext();
const file = wx.getFileSystemManager();
var that;
Page({
/**
* 页面的初始数据
*/
data: {
apikey: '马赛克',
secret_id:'马赛克',
token:"",
recording: false,
cancel_record:false,
start_y: '',
fileBase64: '', //base64的文件
rate: 8000,
filePath: '',//录音文件
fileLen:0,//录音长度
},
/**
* 生命周期函数--监听页面加载
*/
onLoad: function (options) {
that = this;
//先定好停止录音后要干嘛
recorder.onStop(function suc(e) {
//保存录音文件的临时路径
that.setData({
filePath: e.tempFilePath,
})
wx.setStorageSync('filePath', e.tempFilePath);
//友好的菊花加载
wx.showLoading({
title: '文件读取中...'
})
//读取录音文件，并转为base64编码
file.readFile({
filePath: e.tempFilePath,
encoding: 'base64',
success: function (e) {
that.setData({
fileBase64: e.data
})
console.log(e);
},
complete() {
wx.hideLoading();
},
})
})
},
//语音识别
submit(){
let apikey = that.data.apikey;
let param = {
Action: 'SentenceRecognition',
Version: '2018-05-22',
ProjectId: '0',//腾讯云项目ID
SubServiceType: 2, //一句话识别，没得选
EngSerViceType: '8k',//引擎类型 8k（电话） 或 16k，没说明白
SourceType: 1,//0 url 1数据
VoiceFormat: 'mp3',//格式 MP3 或 wav
UsrAudioKey: new Date().getTime(),//唯一识别？直接用时间戳吧珂珂
Data: that.data.fileBase64,
DataLen: app.base64_decode(that.data.fileBase64).length,//未进行base64编码时的数据长度
// Url :'',你懂的
Timestamp: parseInt(new Date().getTime()/1000),
Nonce: parseInt(new Date().getTime() / 1000),
SecretId: that.data.secret_id,
};
//把参数按键值大小排序并拼接成字符串
let data = ksort(param);
let arr = [];
for (var x in data) {
data[x] = encodeURI(data[x]);
arr.push(x + '=' + data[x]);
}
let str = arr.join('&');
//签名生成
let sign = 'POSTaai.tencentcloudapi.com/?' + str;
sign = b64_hmac_sha1(apikey,sign);
data['Signature'] = sign;
//友好的菊花提示
wx.showLoading({
title: '发送中...',
})
wx.request({
url: 'https://aai.tencentcloudapi.com/',
data:data,
header:{
'content-type':'application/x-www-form-urlencoded'
},
method:'post',
success:function(e){console.log(e.data.Response)},
complete(){wx.hideLoading();}
})
},
//手指按下
clickDown(e){
console.log('start');
that.setData({
recording: true,
start_y: e.touches[0].clientY,
cancel_record: false,
})
//开始录音
recorder.start({
duration: 60000,//最大时长
sampleRate: that.data.rate,//采样率
numberOfChannels: 1,//录音通道数
encodeBitRate: 24000,//编码码率，有效值见下表格
format: 'mp3',//音频格式
// frameSize: 2000,//指定大小 kb
})
},
//手指移动
clickMove(e){
if (e.touches[0].clientY - that.data.start_y <= -50) {
that.setData({
cancel_record: true,
})
} else {
that.setData({
cancel_record: false,
})
}
return false;
},
//手指松开
clickUp(e){
console.log('end');
if (that.data.cancel_record) {
wx.showModal({
title: '提示',
content: '您选择了取消发送,确定吗?',
confirmText: '继续发送',
cancelText: '取消重录',
success: res => {
if (res.confirm) {
wx.showToast({
title: '发送成功',
})
} else {
wx.showToast({
title: '您选择了取消',
})
}
that.setData({
recording: false
})
}
})
} else {
wx.showToast({
title: '发送成功',
})
that.setData({
recording: false
})
}
recorder.stop();
return false;
},
//播放
play(){
player.src = that.data.filePath;
player.play();
},
})
//对象按键值排序方法
function ksort(obj){
let temp = 'Action';
let k_arr = [];
for(var x in obj){
k_arr.push(x);
}
k_arr.sort();
let res = {};
for(let i = 0;i> 16) + (y >> 16) + (l >> 16); return (m << 16) | (l & 0xFFFF); } function _r(n, c) { return (n << c) | (n >>> (32 - c)); } function _c(x, l) { x[l >> 5] |= 0x80 << (24 - l % 32); x[((l + 64 >> 9) << 4) + 15] = l; var w = [80], a = 1732584193, b = -271733879, c = -1732584194, d = 271733878, e = -1009589776; for (var i = 0; i < x.length; i += 16) { var o = a, p = b, q = c, r = d, s = e; for (var j = 0; j < 80; j++) { if (j < 16) { w[j] = x[i + j]; } else { w[j] = _r(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1); } var t = _s(_s(_r(a, 5), _f(j, b, c, d)), _s(_s(e, w[j]), _k(j))); e = d; d = c; c = _r(b, 30); b = a; a = t; } a = _s(a, o); b = _s(b, p); c = _s(c, q); d = _s(d, r); e = _s(e, s); } return [a, b, c, d, e]; } function _b(s) { var b = [], m = (1 << _z) - 1; for (var i = 0; i < s.length * _z; i += _z) { b[i >> 5] |= (s.charCodeAt(i / 8) & m) << (32 - _z - i % 32); } return b; } function _h(k, d) { var b = _b(k); if (b.length > 16) { b = _c(b, k.length * _z); } var p = [16], o = [16]; for (var i = 0; i < 16; i++) { p[i] = b[i] ^ 0x36363636; o[i] = b[i] ^ 0x5C5C5C5C; } var h = _c(p.concat(_b(d)), 512 + d.length * _z); return _c(o.concat(h), 512 + 160); } function _n(b) { var t = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/", s = ''; for (var i = 0; i < b.length * 4; i += 3) { var r = (((b[i >> 2] >> 8 * (3 - i % 4)) & 0xFF) << 16) | (((b[i + 1 >> 2] >> 8 * (3 - (i + 1) % 4)) & 0xFF) << 8) | ((b[i + 2 >> 2] >> 8 * (3 - (i + 2) % 4)) & 0xFF); for (var j = 0; j < 4; j++) { if (i * 8 + j * 6 > b.length * 32) { s += _p; } else { s += t.charAt((r >> 6 * (3 - j)) & 0x3F); } } } return s; } function _x(k, d) { return _n(_h(k, d)); } return _x(k, d);
} 页面
样式
.record_btn{
position:absolute;
bottom: 0;
width: 100%;
height:110rpx;
}简洁的页面
录音=>上传=>然后去看控制台日志哈