// 1. 创建一个 AudioContext 和 Audio
const ctx = tt.getAudioContext();
const audio = ctx.createAudio();
audio.src = "xxxx.mp3";
audio.startTime = 0;
audio.autoplay = true;
const source = ctx.createMediaElementSource(audio);
source.connect(ctx.destination);
const recorder = ctx.createStreamFileWriter();
source.connect(recorder);
audio.onplaying = () => {
  recorder.start(tt.env.USER_DATA_PATH + "targetFile.wav");
  recorder.start(tt.env.USER_DATA_PATH + "targetFile.wav"); //注意，刚刚录制的文件（targetFile.wav将被清除，重新开始新的录制
  recorder.start(tt.env.USER_DATA_PATH + "targetFile2.wav"); //注意，刚刚录制的文件（targetFile.wav）将立即停止录制，并开始新文件（targetFile2.wav）的录制
};
audio.onended = () => {
  recorder.stop();
  console.log("recording stopped");
  audio.onplaying = audio.onended = null;
};