本文共 3970 字，大约阅读时间需要 13 分钟。

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

1. 申请讯飞帐号
   
2. 添加IP白名单（5-10分钟生效）
3. 准备一个音频文件（wav或pcm格式）
4. 获取APPID和APPKEY（每个服务的APPKEY不同）

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

语音听写

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;}

语音听写示例：

voiceIat('a.wav');

语音评测

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;}

语音评测示例：

echo voiceIse('a.wav', '科大讯飞真给力');

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！';    }}

语音合成示例：

echo voiceTts('科大讯飞真给力', 'a.wav');