微信公众平台消息接口开发（40）语音识别

微信公众平台开发模式 微信 语音识别 公众平台 消息接口 语音识别

微信公众平台下的语音识别实现流程相当复杂。

一、获取语音文件数据

目前可以通过模拟登录的方式获取语音文件

二、对语音进行编码

一般接口对编码有指定要求，所以需要转码

三、提交数据到第三方接口

获取识别结果与置信度，取最高值

<?php 
$ch = curl_init(); 
curl_setopt($ch, CURLOPT_URL, "http://www.google.com/speech-api/v1/recognize?xjerr=1&client=chromium&lang=zh-CN&maxresults=10"); 
curl_setopt($ch, CURLOPT_VERBOSE, 0); 
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_POST, 1); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_POSTFIELDS, file_get_contents('1.flac'));
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-Type: audio/x-flac; rate=16000")); 
$data = curl_exec($ch); 
curl_close($ch); 
if ($data=json_decode($data,true)) {
 echo "<ul>";
 foreach($data['hypotheses'] as $i) echo "<li>".$i['utterance']."</li>";
 echo "</ul>";
} else {
 echo "<i>识别出错</i>";
}
?>

四、语义识别

通过语法规则对结果进行分析，可同时使用分词的方法来分析

五、

其他：文本转语音

Google Text to Speech API

Base URL: http://translate.google.com/translate_tts
It converts written words into audio. It accepts GET requests.

GET

q
The query string to convert to audio

tl
Translation language, for example, ar for Arabic, or en-us for English

ie
Encoding format, use default UTF-8

Examples

This is an example for Arabic "السلام عليكم"

http://translate.google.com/translate_tts?ie=UTF-8&q=%D8%A7%D9%84%D8%B3%D9%84%D8%A7%D9%85%20%D8%B9%D9%84%D9%8A%D9%83%D9%85&tl=ar

This is an example for English "Hello World"

http://translate.google.com/translate_tts?ie=UTF-8&q=Hello%20World&tl=en-us