Google Cloud Text语音转换成PHP

问题描述

我正在尝试使用google的文字在我的PHP网站中进行语音演讲,以托管在实时的Cpanel服务器上

我已启用文本到语音API,在“凭据”部分中创建了API KEY,还从“创建服务帐户密钥”页面下载了凭据的json文件

然后我从Github下载了示例文件,还使用了作曲家来构建库

现在我不知道将钥匙放在哪里。在每个地方都要求导出Shell中的密钥,但这对于1个打开的命令提示符会话有效,并且每次都必须导出。

由于我想在基于实时cpanel的托管服务器上运行此代码,因此我认为将无法导出。

代码中是否有我可以通过密钥的地方?

在stackoverflow上的this url文章中:第一个答案将CURL的响应导出到 synthesize-text.txt ,但我们需要mp3输出

一个答案指出我们应该使用 jq ,但是由于它是共享的hsoting服务器,所以我不确定是否可以安排 jq

有什么办法解决这个问题吗?


更新

在参考@ V.Tur的答案后尝试以下代码

$params = [
    "audioConfig"=>[
        "audioEncoding"=>"MP3","pitch"=> "1","speakingRate"=> "1","effectsProfileId"=> [
            "medium-bluetooth-speaker-class-device"
          ]
    ],"input"=>[
        "ssml"=>'<speak>The <say-as interpret-as=\"characters\">SSML</say-as>
                  standard <break time=\"1s\"/>is defined by the
                  <sub alias=\"World Wide Web Consortium\">W3C</sub>.</speak>'
    ],"voice"=>[
        "languageCode"=> "hi-IN","name" =>"hi-IN-Wavenet-B",'ssmlGender'=>'MALE'
    ]
];
$data_string = json_encode($params);
$speech_api_key = "My_Key_Here";
$url = 'https://texttospeech.googleapis.com/v1/text:synthesize?fields=audioContent&key=' . $speech_api_key;
$handle = curl_init($url);

curl_setopt($handle,CURLOPT_CUSTomrEQUEST,"POST"); 
curl_setopt($handle,CURLOPT_POSTFIELDS,$data_string);  
curl_setopt($handle,CURLOPT_RETURNTRANSFER,true);
curl_setopt($handle,CURLOPT_HTTPHEADER,[                                                                          
    'Content-Type: application/json','Content-Length: ' . strlen($data_string)
    ]                                                                       
);
$response = curl_exec($handle);              
$responseDecoded = json_decode($response,true);  
curl_close($handle);
if($responseDecoded['audioContent']){
    return $responseDecoded['audioContent'];                
} 

我下载了音频,但是我在ssml中提到的暂停/中断不起作用。我尝试将数据传递给$ params,如下所示:

$params = "{
    'input':{
     'ssml':'<speak>The <say-as interpret-as=\"characters\">SSML</say-as>
          standard <break time=\"1s\"/>is defined by the
          <sub alias=\"World Wide Web Consortium\">W3C</sub>.</speak>'
    },'voice':{
      'languageCode':'en-us','name':'en-US-Standard-B','ssmlGender':'MALE'
    },'audioConfig':{
      'audioEncoding':'MP3'
    }
}";

但是出现以下错误

Array([error] => Array([code] => 400 [message] =>无效的JSON 有效负载已收到。未知名称“”:根元素必须是一条消息。 [状态] => INVALID_ARGUMENT [详细信息] =>数组([0] =>数组( [@type] => type.googleapis.com/google.rpc.BadRequest [fieldViolations] =>数组([0] =>数组([description] =>接收到无效的JSON有效负载。未知名称“”:根元素必须是一条消息。))))))

如何解决这个问题?

解决方法

在我的工作示例“文字转语音”下方,您可以重做您的需求:

public static function getSound($text)
        {            
            
            $text = trim($text);

            if($text == '') return false;
            
            $params = [
                "audioConfig"=>[
                    "audioEncoding"=>"LINEAR16","pitch"=> "1","speakingRate"=> "1","effectsProfileId"=> [
                        "medium-bluetooth-speaker-class-device"
                      ]
                ],"input"=>[
                    "text"=>$text
                ],"voice"=>[
                    "languageCode"=> "en-US","name" =>"en-US-Wavenet-F"
                ]
            ];

            $data_string = json_encode($params);

            $url = 'https://texttospeech.googleapis.com/v1/text:synthesize?fields=audioContent&key=' . $speech_api_key;
            $handle = curl_init($url);
            
            curl_setopt($handle,CURLOPT_CUSTOMREQUEST,"POST"); 
            curl_setopt($handle,CURLOPT_POSTFIELDS,$data_string);  
            curl_setopt($handle,CURLOPT_RETURNTRANSFER,true);
            curl_setopt($handle,CURLOPT_HTTPHEADER,[                                                                          
                'Content-Type: application/json','Content-Length: ' . strlen($data_string)
                ]                                                                       
            );
            $response = curl_exec($handle);              
            $responseDecoded = json_decode($response,true);  
            curl_close($handle);
            if($responseDecoded['audioContent']){
                return $responseDecoded['audioContent'];                
            } 

            return false;  
        }

using:
public static function saveSound($text)
   {
      $speech_data = SpeechAPI::getSound($text);//see method upper

      if($speech_data) {                
         $file_name = strtolower(md5(uniqid($text)) . '.mp3');
         $path = FileUpload::getFolder();//just return directory path
         if(file_put_contents($path.$file_name,base64_decode($speech_data))){
             return $file_name;
             }
         }

        return null;
   }

对于SSML标准,需要更改输入参数:

$text = "<speak>The <say-as interpret-as=\"characters\">SSML</say-as>
            standard <break time=\"1s\"/>is defined by the
            <sub alias=\"World Wide Web Consortium\">W3C</sub>.</speak>";
$params = [
    "audioConfig"=>[
    "audioEncoding"=>"LINEAR16","effectsProfileId"=> [
        "medium-bluetooth-speaker-class-device"
       ]
     ],"input"=>[
         //"text"=>$text
         "ssml" => $text
          ],"voice"=>[
              "languageCode"=> "en-US","name" =>"en-US-Wavenet-F"
            ]
         ];

关于选择audioEncoding-https://cloud.google.com/speech-to-text/docs/encoding

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