This can be set. If the audience turns off the microphone and mutes it, the announcer can't hear you, or the announcer turns off the sound, so even if you turn on the microphone, he can't hear you. So, the announcer turns on the speaker, you turn on the microphone, and he allows you to speak. This can be set. If the audience turns off the microphone and mutes it, the announcer can't hear you, or the announcer turns off the sound, so even if you turn on the microphone, he can't hear you. So, the announcer turns on the speaker, you turn on the microphone, and he allows you to speak.