如何使用Java脚本在浏览器中将从Google文本到语音的Base64响应作为mp3音频播放

async function playVoiceover() {
    const url ='https://texttospeech.googleapis.com/v1/text:synthesize?key=XXXXXXX'
    const rawResponse = await fetch(url, {
      method: 'POST',
      headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        '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'
         }
      })
    });
    const content = await rawResponse.json();
    const mp3 = 'data:audio/mp3;base64,'+window.atob(content.audioContent)
    const audio = new Audio(mp3);
    audio.play();
  }