Question

我有webm音频文件，并想转换为Google Cloud Speech API支持的flac / Linear16。知道我该怎么做吗？

在React前端上，我正在使用ReactMic来获取录制的音频。

<ReactMic
    className="w-10 h-1 aspect-ratio ml2"
    record={this.props.recording}
    onData={this.props.onData}
    onStop={this.props.onStop}
    strokeColor="#FFFFFF"
 />
 </div>
    <div className="ma3">
         <Button onClick={this.props.onStartRecord}>Start Recording</Button>
         <Button onClick={this.props.onStopRecord}>Stop Recording</Button>
    </div>

//各个功能

onStartRecord = e => {
    this.setState({ recording: true });
};

onStopRecord = e => {
    this.setState({ recording: false });
};

onStop = recordedBlob => {
    this.setState({ recordedAudio: recordedBlob });
};

然后将录制的音频作为HTTP Post请求发送

let fd = new FormData();
fd.append("audio", this.state.recordedAudio.blob);

fetch(this.props.url + "speeches/", {
  method: "post",
  body: fd
})
  .then(response => response.text())
  .then(data => {
    this.setState({ result: data });
  });

在Java Spring后端，我将以MultipartFile的形式接收音频

@RequestMapping(value = "/speeches", method = RequestMethod.POST,
        consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
public ResponseEntity<String> speechToText(@RequestBody MultipartFile audio) {

   return itemService.speechToText(audio);
}

现在的问题是该文件为webm格式，但Google Cloud Speech-To-Text API不支持该格式。有没有一种方法可以在前端或后端转换为flac / linear16格式。谢谢！

在Java Spring上将Webm音频文件转换为flac for Google Cloud Speech-To-Text API

0 个答案: