HarmonyOS 打开人脸活体检测页面有声音，如何控制声音开关？

import audio from '@ohos.multimedia.audio'; 
let audioManager = audio.getAudioManager(); 
audioManager.setVolume(audio.AudioVolumeType.ACCESSIBILITY, 10, (err: BusinessError) => { 
  if (err) { 
    console.error(`Failed to set the volume. ${err}`); 
    return; 
  } 
  console.info('Callback invoked to indicate a successful volume setting.'); 
});

import audio from '@ohos.multimedia.audio'; 
 
let audioManager = audio.getAudioManager(); 
let audioVolumeManager = audioManager.getVolumeManager(); 
let TAG: string = "Audio Kit(音频服务)"; 
 
audioVolumeManager.on('volumeChange', (volumeEvent: audio.VolumeEvent) => { 
  console.info(TAG+"监听系统音量变化"+JSON.stringify(volumeEvent)); 
});