Version: 5.4.9 (59931.0110)
OS: Windows 10, 19042.867, Windows Feature Experience Pack 120.2212.551.0
Device: Dell XPS 13 7390
Problem: Zoom is set to use audio from a jack mic. When jack mic is turned off, Zoom picks up and transmits audio that’s playing on my computer instead.
To reproduce problem:
- Start zoom meeting.
- Set audio device to “Jack mic”
- Turn off the microphone so that it picks up no sound.
- Play music on iTunes
- Sound of music will be transmitted to meeting participants.
Talking or even screaming into the jack mic (that is turned off) produces no sound for other meeting participants, as expected. This means that Zoom is not picking up sound from the jack mic nor from the computer’s built-in microphone array (which would have picked up my voice), but is taking it directly from the soundcard, or what Windows calls the “Stereo Mix” audio input. However, Stereo Mix is disabled in Control Panel. How is Zoom recording and transmitting audio from an input that is disabled? And why? This is both a privacy and a security concern.