PHP calls iFlytek voice service

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Release： 2023-03-23 19:44:01

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PHP calling the iFlytek voice service

Recently I am working on a WeChat applet and need to do speech recognition, so I chose iFlytek Voice, which is well-known in China.
My background is PHP, and I went through some pitfalls during the access process. I share it here in the hope that it can help friends in need

Preparation

Apply for iFlytek account http://www.xfyun.cn/
Add IP whitelist (Effective in 5-10 minutes)
Prepare an audio file (wav or pcm format)
Get APPID and APPKEY (each The APPKEY of each service is different)

const APP_ID = &#39;xxxx&#39;;const APP_KEY_IAT = &#39;xxxx&#39;; //语音听写APPKEYconst APP_KEY_ISE = &#39;xxxx&#39;; //语音评测APPKEYconst APP_KEY_TTS = &#39;xxxx&#39;; //语音合成APPKEY

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Voice dictation

public function voiceIat($file_path){
    $param = [        &#39;engine_type&#39; => &#39;sms16k&#39;,        &#39;aue&#39; => &#39;raw&#39;
    ];    $cur_time = (string)time();    $x_param = base64_encode(json_encode($param));    $header_data = [        &#39;X-Appid:&#39;.self::APP_ID,        &#39;X-CurTime:&#39;.$cur_time,        &#39;X-Param:&#39;.$x_param,        &#39;X-CheckSum:&#39;.md5(self::APP_KEY_IAT.$cur_time.$x_param),        &#39;Content-Type:application/x-www-form-urlencoded; charset=utf-8&#39;
    ];    //Body
    $file_path = $file_path;    $file_content = file_get_contents($file_path);    $body_data = &#39;audio=&#39;.urlencode(base64_encode($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;
}

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Voice dictation example:

voiceIat(&#39;a.wav&#39;);

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Voice evaluation

public function voiceIse($file_path, $content){
    $param = [        &#39;language&#39; => &#39;cn&#39;,        &#39;aue&#39; => &#39;raw&#39;,        &#39;category&#39; => &#39;read_sentence&#39;
    ];    $cur_time = (string)time();    $x_param = base64_encode(json_encode($param));    $header_data = [        &#39;X-Appid:&#39;.self::APP_ID,        &#39;X-CurTime:&#39;.$cur_time,        &#39;X-Param:&#39;.$x_param,        &#39;X-CheckSum:&#39;.md5(self::APP_KEY_ISE.$cur_time.$x_param),        &#39;Content-Type:application/x-www-form-urlencoded; charset=utf-8&#39;
    ];    //Body
    $file_path = $file_path;    $file_content = file_get_contents($file_path);    $body_data = &#39;audio=&#39;.urlencode(base64_encode($file_content)).&#39;&text=&#39;.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;
}

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Voice evaluation example:

echo voiceIse(&#39;a.wav&#39;, &#39;科大讯飞真给力&#39;);

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Speech synthesis

public function voiceTts($content, $output_path){
    $param = [        &#39;engine_type&#39; => &#39;intp65&#39;,        &#39;auf&#39; => &#39;audio/L16;rate=16000&#39;,        &#39;aue&#39; => &#39;raw&#39;,        &#39;voice_name&#39; => &#39;xiaoyan&#39;,        &#39;speed&#39; => &#39;0&#39;
    ];    $cur_time = (string)time();    $x_param = base64_encode(json_encode($param));    $header_data = [        &#39;X-Appid:&#39;.self::APP_ID,        &#39;X-CurTime:&#39;.$cur_time,        &#39;X-Param:&#39;.$x_param,        &#39;X-CheckSum:&#39;.md5(self::APP_KEY_TTS.$cur_time.$x_param),        &#39;Content-Type:application/x-www-form-urlencoded; charset=utf-8&#39;
    ];    //Body
    $body_data = &#39;text=&#39;.urlencode($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($res_header, &#39;Content-Type: audio/mpeg&#39;) === FALSE){ //合成错误
        return substr($result, $res_header_size);
    }else{
        file_put_contents($output_path, substr($result, $res_header_size));        return &#39;语音合成成功，请查看文件！&#39;;
    }
}

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Speech synthesis example:

echo voiceTts(&#39;科大讯飞真给力&#39;, &#39;a.wav&#39;);

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