php - php 中的谷歌云文本转语音

Question

我正在尝试在我的 php 网站中使用 google 的文本转语音功能，并将其托管在实时 Cpanel 服务器上

我已启用文本转语音 API，在凭据部分创建了 API key ，还从创建服务帐户 key 页面下载了凭据的 json 文件。

然后我从 Github 下载了示例文件，并使用 Composer 构建了库

现在我不知道该把 key 放在哪里。在每个地方，它都要求在 Shell 中导出 key ，但这适用于 1 个打开的命令提示符 session ，并且每次都必须导出。

由于我想在基于 cpanel 的实时托管上运行此代码，因此我认为无法导出。

代码中是否有可以传递 key 的地方？

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

另一个答案指出我们应该使用jq，但由于它是共享的hsoting服务器，我不确定我们是否可以安排jq。

有办法解决这个问题吗？

---

更新

引用@V.Tur的答案后尝试了以下代码

$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'
    }
}";

但我收到以下错误:

Array ( [error] => Array ( [code] => 400 [message] => Invalid JSON payload received. Unknown name "": Root element must be a message. [status] => INVALID_ARGUMENT [details] => Array ( [0] => Array ( [@type] => type.googleapis.com/google.rpc.BadRequest [fieldViolations] => Array ( [0] => Array ( [description] => Invalid JSON payload received. Unknown name "": Root element must be a message. ) ) ) ) ) )

如何解决这个问题？

Answer 1

在我的文本转语音工作示例下面，您可以根据需要重做:

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>";
$params = [
    "audioConfig"=>[
    "audioEncoding"=>"LINEAR16",
    "pitch"=> "1",
    "speakingRate"=> "1",
    "effectsProfileId"=> [
        "medium-bluetooth-speaker-class-device"
       ]
     ],
     "input"=>[
         //"text"=>$text
         "ssml" => $text
          ],
          "voice"=>[
              "languageCode"=> "en-US",
              "name" =>"en-US-Wavenet-F"
            ]
         ];

关于选择音频编码 - https://cloud.google.com/speech-to-text/docs/encoding