PHP调用科大讯飞语音服务
最近在做微信小程序，需要做语音识别，选择了国内很有名的讯飞语音。
我的后台是PHP，在接入过程中走了一些坑，在这里分享出来希望可以帮助需要的朋友
准备工作
申请讯飞帐号http://www.xfyun.cn/
这里写图片描述
添加IP白名单（5-10分钟生效）
准备一个音频文件（wav或pcm格式）
获取APPID和APPKEY（每个服务的APPKEY不同）
[code]const APP_ID = 'xxxx';const APP_KEY_IAT = 'xxxx'; //语音听写APPKEYconst APP_KEY_ISE = 'xxxx'; //语音评测APPKEYconst APP_KEY_TTS = 'xxxx'; //语音合成APPKEY</code>
语音听写
<code>public function voiceIat($file_path){
$param = [ 'engine_type' => 'sms16k', 'aue' => 'raw'
]; $cur_time = (string)time(); $x_param = base64_encode(json_encode($param)); $header_data = [ 'X-Appid:'.self::APP_ID, 'X-CurTime:'.$cur_time, 'X-Param:'.$x_param, 'X-CheckSum:'.md5(self::APP_KEY_IAT.$cur_time.$x_param), 'Content-Type:application/x-www-form-urlencoded; charset=utf-8'
]; //Body
$file_path = $file_path; $file_content = file_get_contents($file_path); $body_data = 'audio='.urlencode(base64_encode($file_content)); //Request
$url = "http://api.xfyun.cn/v1/service/v1/iat"; $ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header_data);
curl_setopt($ch, CURLOPT_POSTFIELDS, $body_data); $result = curl_exec($ch);
curl_close($ch); return $result;
}[/code]
语音听写示例：
[code]voiceIat('a.wav');[/code]
语音评测
[code][code]public function voiceIse($file_path, $content){
$param = [ 'language' => 'cn', 'aue' => 'raw', 'category' => 'read_sentence'
]; $cur_time = (string)time(); $x_param = base64_encode(json_encode($param)); $header_data = [ 'X-Appid:'.self::APP_ID, 'X-CurTime:'.$cur_time, 'X-Param:'.$x_param, 'X-CheckSum:'.md5(self::APP_KEY_ISE.$cur_time.$x_param), 'Content-Type:application/x-www-form-urlencoded; charset=utf-8'
]; //Body
$file_path = $file_path; $file_content = file_get_contents($file_path); $body_data = 'audio='.urlencode(base64_encode($file_content)).'&text='.urlencode($content); $url = "http://api.xfyun.cn/v1/service/v1/ise"; $ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header_data);
curl_setopt($ch, CURLOPT_POSTFIELDS, $body_data); $result = curl_exec($ch);
curl_close($ch); return $result;
}[/code]
语音评测示例：
[code]echo voiceIse('a.wav', '科大讯飞真给力');[/code]
语音合成
public function voiceTts($content, $output_path){
$param = [ 'engine_type' => 'intp65', 'auf' => 'audio/L16;rate=16000', 'aue' => 'raw', 'voice_name' => 'xiaoyan', 'speed' => '0'
]; $cur_time = (string)time(); $x_param = base64_encode(json_encode($param)); $header_data = [ 'X-Appid:'.self::APP_ID, 'X-CurTime:'.$cur_time, 'X-Param:'.$x_param, 'X-CheckSum:'.md5(self::APP_KEY_TTS.$cur_time.$x_param), 'Content-Type:application/x-www-form-urlencoded; charset=utf-8'
]; //Body
$body_data = 'text='.urlencode($content); //Request
$url = "http://api.xfyun.cn/v1/service/v1/tts"; $ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, TRUE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header_data);
curl_setopt($ch, CURLOPT_POSTFIELDS, $body_data); $result = curl_exec($ch); $res_header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE); $res_header = substr($result, 0, $res_header_size);
curl_close($ch); if(stripos($res_header, 'Content-Type: audio/mpeg') === FALSE){ //合成错误
return substr($result, $res_header_size);
}else{
file_put_contents($output_path, substr($result, $res_header_size)); return '语音合成成功，请查看文件！';
}
}
[/code]
语音合成示例：
[code]echo voiceTts('科大讯飞真给力', 'a.wav');[/code]