javascript - 如何将PCM样本从麦克风转换为React Native中的字节

我正在研究react-native项目，该项目从麦克风读取音频样本并将其通过websocket发送进行处理。我读取的样本具有以下格式258，-403，-595，-740，-643，-595，-836 ，-1109，-1141，-1317，-1428，-1059，-804，-884，-980，-788，-451，-419，-387，-82,61,157,366,462,446,606,574,478,767,1038,1088,1216,1505， 1617,1248,991,1007,751,494,398,221，-50，-419，-690，-788，-948，-1059，-1027，-980，-1027，-1141，-1075，-1093，-1205，- 996，-706，-435，-146,29，-162，-338，-178，-50，-162，-322，-499，-531，-306，-18,269,574,863,783,622,558,685,1022,1104,1136,1070 ，815,606,348,205,61，-274，-611，-852，-884，-675，-595，-611，-483，-242，-66,0,269,430,269,269,398,430,269,125,333,253，-258，-162,45，-338，-627 ，-371，-98，-146,0,205,109,189,285,366,430,414,382,173,205,414,382,13，-419，-353，-403，-627，-675，-722，-675，-900，-1093，-932，-836，-772， -627，-611，-595，-451，-274，-162，-387，-242，-130，-322，-98,0，-34,237,462,526,462,526,799,895,991,1104,1200,1407,1537,1697,1697， 1423,1328,1184,1070,799,221，-194，-531，-884，-996，-1043，-1189，-1173， -1027，-916，-868，-980，-980，-868，-722，-531，-483，-515，-611，-595，-690，-900，-868，-932，-916 ，-804，-980，-1012，-788，-483，-114,45,45,29,253,478,382,348,510,767,1022,1054,1136,1296,1360,1136,1022,1216,1136,911,767,478

如果我将它们写入文件，它们将照原样写入。如何在将它们转储到文件之前进行转换，以便以后可以在Audacity中播放？

最佳答案

终于，我找到了一种方法。

class App extends React.Component {
  constructor(){
    super();
    this.state={
      status:true
    }

  }
  componentDidMount() {

    ws = new WebSocket('ws://192.168.0.2:1234');

    ws.onopen=()=>{
      console.log('Opened')
    }

    ws.onerror=(e)=>{
      console.log(e.message)
    }

    ws.onmessag=(e)=>{
      console.log(e.data);
    }
    ws.onclose=()=>{
      console.log('closed')
    }

    //Recording.start()

  }

  startVoice(){

    Recording.init({
      bufferSize: 640,
      sampleRate: 16000,
      bitsPerChannel: 16,
      channelsPerFrame: 1,
    })

    const listener = Recording.addRecordingEventListener(data => {

      //console.log(data)
      var view = new Uint16Array(data);
      ws.send(view);

    })

    Recording.start();
    this.setState({status:false});
  }

  stopVoice(){
    Recording.stop();
    this.setState({status:true});
  }

componentWillUnmount() {
    //Recording.stop()
  }

  render() {
    return(
        <View>
       {this.state.status?<Button title='start' onPress={()=>this.startVoice()}/>:<Button title='stop' onPress={()=>this.stopVoice()}/>}
       </View>
    )
  }
}

export default App;