const options = {
  duration: 10000,
  sampleRate: 44100,
  numberOfChannels: 1,
  encodeBitRate: 192000,
  format: 'aac',
  frameSize: 50
}

recorderManager.start(options)

---

duration，format很好理解。其他参数各自怎么传呢？会影响什么？