HarmonyOS 使用AVRecorder录音时，怎么获取音量

在使用AVRecorder录音时，需要同时获取声音的音量。目前只找到获取设备媒体的音量，这不符合需求。请问有别的方式获取吗？

setInterval(() => {
  let audioManager = audio.getAudioManager();
  let audioVolumeManager: audio.AudioVolumeManager = audioManager.getVolumeManager();
  let groupId: number = audio.DEFAULT_VOLUME_GROUP_ID;
  audioVolumeManager.getVolumeGroupManager(groupId, (err: BusinessError, value: audio.AudioVolumeGroupManager) => {
    if (err) {
      console.error(`[audio] Failed to obtain the volume group infos list. ${err}`);
      return;
    }
    value.getVolume(audio.AudioVolumeType.MEDIA, (err: BusinessError, value: number) => {
      if (err) {
        console.error(`[audio] Failed to obtain the volume. ${err}`);
        return;
      }
      console.info('[audio] volume ' + value);
    });
    console.info('[audio] Callback invoked to indicate that the volume group infos list is obtained.');
  });
}, 300)
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